History Main / LoveMakesYouCrazy

** In the Rebellion movie, Homura's love for Madoka turns her into the devil

* This trope is the whole shebang of ''VideoGame/SilentHill2'', where the protagonist James Sunderland is absolutely nuts following the death of his wife Mary... to the point where he's desperate enough to believe that [[HesJustHiding she is actually alive and waiting in Silent Hill]]. Of course, his feelings toward Mary, inability to see her suffer, and all-consuming fears of abandonment are so exaggerated that he [[spoiler: kills her instead of letting her die]] and is eventually [[spoiler: DrivenToSuicide]], at least in one ending.

* Happens to Kirby in the ''VideoGame/Kirby64TheCrystalShards'' good ending, where Ribbon kisses Kirby. Cue the hearts that float into the sky.

->'''Trinity:''' You wanna make a deal? How about this? [[MexicanStandoff You give me Neo or we all die, right here, right now]].\\

'''The Merovingian:''' [[LampshadeHanging It is remarkable how similar the pattern of love is to the pattern of]] ''[[LampshadeHanging insanity]]''.

* In ''ThrillMe'', this trope is Nathan's explanation for why he committed a series of crimes, including murder.

But you've asked a simple question\\

* Romantic love is in fact linked to high levels of dopamine. Dopamine is linked to schizophrenia. Love ''actually'' makes you crazy.

* Gendo in ''Anime/NeonGenesisEvangelion'' is a MagnificentBastard who wants to [[AGodAmI become a god]]. It all boils down to his entire life being miserable until he met his wife Yui. Then she died, and Gendo snapped.

* A more benign example: at one point in the ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' fanfic ''Dawn of a New Day'', Twilight Sparkle becomes ''so'' pent up over her [[CanNotSpitItOut inability to confess her feelings to Rainbow Dash]] that she enters a delusional state (complete with false memories) and spends several hours believing that she has and they are happily dating. Unlike other examples of this trope, she doesn't engage in any sort of disturbing behavior and just acts slightly more affectionate to Rainbow Dash than usual. Upon snapping out of it, Twilight is left feeling guilty and sad. [[spoiler:Fortunately, her behavior helps Rainbow Dash to realize that she's starting to develop feelings for Twilight.]]

* A more benign example: at one point in the ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' fanfic ''Dawn of a New Day'', Twilight Sparkle becomes ''so'' pent up over her [[CanNotSpitItOut inability to confess her feelings to Rainbow Dash]] that she enters a delusional state (complete with false memories) and spends several hours believing that she has and they are happily dating. Unlike other examples of this trope, she doesn't engage in any sort of violent behavior and just acts slightly more affectionate to Rainbow Dash than usual. Upon snapping out of it, she's left feeling guilty and sad. [[spoiler:Fortunately, her behavior helps Rainbow Dash to realize that she's starting to develop feelings for Twilight.]]
[[/folder//

* For a less violent and more sad example, at one point in the ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' fanfic "Dawn of a New Day", Twilight Sparkle becomes ''so'' pent up over her [[CanNotSpitItOut inability to confess her feelings to Rainbow Dash]] that she enters a delusional state and spends several hours believing that she has and they are dating. She snaps out of it later, though.

** [[spoiler:EVERYONE]]! It's true that while [[spoiler:Beatrice]] may be the craziest since [[spoiler:she killed everyone in the Ushiromiya family, as well as a few servants, and a doctor because Battler came to Rokkenjima at the wrong time]], but [[spoiler:EVERYONE]] has their moment where love drives them bonkers.

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--> -- ''Film/TheMatrix Revolutions''

** It's not that they are everywhere, it's that either their mother's had the worst pregnancy's ever, or there are large cloning facilities somewhere. ''Very'' early on (we are talking the first few episodes of ''[[LongRunner season 1]]'') one of the Officers Jenny shows Ash a graduation picture of somewhere around 30 women (all of whom look identical to Officer Jenny, all of whom are named Jenny) who are graduating from the Police Academy. If I remember correctly there was also one of these shown for Nurse Joy, but for nursing school.

* Three years of FalseStart after FalseStart when she tries to approach Sakaki have left poor Kaorin of ''Manga/AzumangaDaioh'' with more neuroses than a WoodyAllen film festival. She's fine when she's thinking about something else, but once she sees Sakaki... or thinks about Sakaki... or has a dream about Sakaki... et cetera... she becomes an odd combination of ClingyJealousGirl and CannotSpitItOut.
* ''VisualNovel/HigurashiNoNakuKoroNi'' has [[spoiler:Shion Sonozaki]]. This does not end well. A more fitting trope for her than {{Yandere}} due the [[HatePlague cause]] of her craziness.
* ''OnePiece'': Boa Hancock badly misinterprets innocuous actions as signs that Luffy reciprocates her love for him. This would seem cute and innocent and so not creepy if she didn't happen to be [[ChristmasCake pushing thirty]]. Her behavior has a uncomfortable resemblance to a certain RealLife psychological disorder. (Then again, given [[FreudianExcuse all the crap she had been through early in life]], her screws may not have been put in quite tight enough before she met him anyway...)

** It may also be FridgeBrilliance, if you see Boa Hancock/Luffy ShipTease [[WhatDoYouMeanItsNotSymbolic as a parallel to]] [[AllAmazonsWantHercules Hippolyta's attraction to Heracles]], which ended rather badly, or Circe's unrequited love for Odysseus, despite him being the only one to resist her charms.
* One of the creepiest examples comes from Minoru Murao's ''{{Knights}}'' manga. Of all people, [[spoiler: Nina, the cute little girl of the cast]] goes nuts when she assumes that the object of her affection Mist is physically involved with his MsFanservice companion Euphemia. Her response is to [[spoiler: lead a supernatural agent of the CorruptChurch (the same Church that nearly ''burned her at the stake after accusing her of being a witch'') to kill him. She even shoots him in the leg with a crossbow. Her motivation? To ''send his soul to Hell'', where it will be "purified", then ''join him in death so they can be together for all eternity'']]. Keep in mind that this guy ''saved her life'' in the first few chapters, which is why [[RescueRomance she's so hung up on him in the first place]]. This is borderline LoveMakesYouEvil. To her credit, she does eventually realize just how utterly screwed up she was, and works to undo her actions.
* ''FruitsBasket'': Kagura Sohma is the sweetest little thing... until something gets between her and Kyo....

* ''MiraiNikki'': Yuno is [[{{Yandere}} singlemindedly devoted]] to Yukiteru. Although it's she was already insane [[spoiler: due to her AbusiveParents]] long before she fell in love with him.

* [[spoiler: Seimei]] from ''{{Loveless}}'' is known to have [[spoiler: faked his own death, killed, manipulated and [[MindRape mind raped]] countless people, abandoned his family, tricked everyone with his seemingly polite nature, and basically controlled Ritsuka's (the main character) life. All because, according to him, he is insecure and wanted to test Ritsuka's love for him.]] [[{{Shotacon}} Have we mentioned that Ritsuka is only twelve years old?]] [[BrotherSisterIncest And that he's his brother]]?
* ''{{Zetsuai 1989}}'' is all about this trope. Let's see: when Izumi was five, his mother discovered his father was cheating on her, and murdered him in front of Izumi so that she could "possess him completely". Then there's the {{Yandere}} fan Eri, who [[spoiler: tries to murder Kouji at his farewell concert]]. And that's without even mentioning the multiple examples of Kouji being driven to despair, self-mutilation, or generally self-destructive behaviour because of his love for Izumi -- who is understandably a bit freaked out by all this. At first. After a while, he starts to join in...

* [[DysfunctionJunction Damn near everyone]] in ''{{Durarara}}''. It's essentially "LoveMakesYouCrazy - The Series".

* In ''DotHack'' series, Harald's obsession toward Emma Wielant (even after his death) was what caused him to create the beta version of ''The World'', ''Fragment'', both of which are actually [[spoiler:an attempt to create the ultimate AI by studying millions of players]]. And guess the source of the network crisis that happen throughout the series...
* Mayo -- 3rd ''FushigiYuugi'' OVA. She's so infatuated with Tamahome that she's willing to destroy his world (both literally and figuratively) just to be with him.

* The ultimate cause of ''TsubasaReservoirChronicle'', as both motivation of the villain Fei Wong (who wants to resurrect the technically-not-dead [[spoiler: Yuuko Ichihara]] and also at one point the motivation of the hero (it's crazy due to what they are both willing to ''do''- it's [[LoveMakesYouEvil evil]], yes, but also completely fucking bonkers). At a specific point in the backstory the hero, in the madness of love, chose to turn back time so he could save the girl he was in love with. This act ''borked the entire time-space continuum.''

** Some fans theorize that even ''Manga/CardcaptorSakura'' was caused by this love driving people nuts, as it is suspected that it was [[JustAsPlanned all part of the plan]] Clow Reed set up to overcome Fei Wong's EvilPlan to resurrect the aforementioned not dead person. Needless to say, a plot driven by so many {{ThePlan plan-happy]] nutjobs is not the easiest thing to follow.
* Inverted[[note]]without actually being LoveRedeems[[/note]] in the ''WildSeries''. When they have a master, manbeasts will not lose their minds and attack humans, and that bond is based around love ([[LoveAtFirstSight whether they want it]] [[BelligerentSexualTension or not]]). So basically, love makes you sane in this case.

* Oz in ''PandoraHearts'' for Alice. He'll do anything for Alice. [[spoiler: Will go temporarily insane after witnessing human!Alice's death. Will tear apart the Abyss and almost Alice herself to get rid of anything that hurts her.]]

** However, the ''real'' winner of LoveMakesYouCrazy in ''PandoraHearts'' is [[spoiler: Jack Vessalius]], whose obsession started the entire plot.
* ''Anime/PuellaMagiMadokaMagica'' has Sayaka Miki, whose love for a childhood friend is unfulfilled, driving her berserk, [[spoiler: and eventually turning her into a huge mermaid monster.]] Though in her case, her love was ''just'' a cathalyst; the poor girl already had SERIOUS issues from long before she was unfulfilled.
* Belarus from ''AxisPowersHetalia'' is described as being relatively cool-headed. That, is, before she [[StalkerWithACrush fell in love.]] She cornered Russia in a closet, made him cry, and carries knives in her dress to threaten people who get too close to him. Not to mention, [[{{Squick}} he's her brother]].
* Shion in ''{{No6}}'' [[HoYay for Nezumi]]. When Nezumi is threatened, Shion switches from either all-out rage or coldly, completely rational and ''murderous.'' In the novels, [[spoiler: he comes close to strangling a man when he tries to kill Nezumi and declares it to be "punishment."]] In episode 10 he [[spoiler: murders a guy in cold blood who tried to kill Nezumi]].
* The [[SDGundamForce Zako Soldiers]] spell this trope out at the end of one of their [[ShowWithinAShow ZakoZako Hours]].

* Rune in ''KarakuridoujiUltimo'' [[HoYay towards Yamato]].
* Kisshu from ''TokyoMewMew'' towards Ichigo. He tries to MurderTheHypotenuse in order to have Ichigo for himself and even resorts to trying to [[IfICantHaveYou kill Ichigo]] herself if she refuses his advances.

* ''KoharuNoHibi'': Koharu in regards to Akira. She stalks him, obsesses over him, and devotes her whole life to him. In chapter 21 she even told him she would die if he asked her to.

* In ''{{Naruto}}'', [[spoiler:this is revealed to be the true nature of the Uchiha Clan's curse, crossed over with LoveMakesYouEvil. They do not ''lack'' love; '''''they love too much'''''. And when they witness the death of a loved one, it activates the sharingan, literally born out of the hate that was born out of that loss. The deeper they delve into that hatred, the stronger their eyes get, but as a side effect they become hateful, bitter, cynical, and as Sasuke, Tobi, and to a lesser extent, Madara, has shown us, downright insane. This is why Tobirama Senju, the Second Hokage, considered them a "cursed clan".]]

* From DC comics, we have the [[ComicBook/GreenLantern Star Sapphire Corps]], whose power is fueled by love. Originally [[WithGreatPowerComesGreatInsanity the power was consolidated into a single person]], and as a result this trope was mainly the sort of love that fit into this category.
* This trope is taken quite literally with HarleyQuinn.
* In an issue of ''Comicbook/SwampThing'', "My Blue Heaven" (written by AlanMoore) has Alec trapped on an alien world all alone. He uses his plant-controlling powers to create clones of himself... and then, in a moment of temptation, creates his love Abby. After spending another day creating an entire populated world, he accidentally creates a JohnConstantine who warns him how crazy he's become. It doesn't help that Alec can't ignore the fact he can't get Abby's smile just right, and he goes mad when his Abby-self responds "All love... is madness."
* Parodied in ''{{Asterix}} and the Legionary'', where Obelix starts acting extremely strange because he's in love with Panacea, which is soon diagnosed by the other villagers. Later, after their terrible behaviour has caused a centurion to become extremely overstressed and prone to collapsing sobbing onto other soldiers, he assumes he's in love. This seems at first to be Obelix's CloudCuckooLander personality, but it becomes a RunningGag with every other character who witnesses his freakouts assuming the same thing.

** GeneKelly does a similar routine in ''It's Always Fair Weather'', but on roller skates.
* ''BitterMoon''. What starts out as a beautiful love story between a man and a woman ends up as two people who have destroyed each other and themselves.

* ''MySummerOfLove'' has aspects of this

* ''MulhollandDrive''

* In ''Film/ThrowMommaFromTheTrain'', this line is used, word for word, as the last line of ''BillyCrystal'''s book. "Hate makes you impotent, ''LoveMakesYouCrazy'', somewhere in the middle you can survive."
* ''CrazyStupidLove''
* Esther in ''{{Orphan}}''.

* Edmund Bertram, previously the OnlySaneMan at ''MansfieldPark'' save for the heroine, falls blindly in love with Mary Crawford at the expense of all higher reasoning and discernment.

* In ''OnlyTheRingFingerKnows'', Yuichi Kazuki is known at Wataru Fujii's school for being kind and polite to everyone he meets, despite possessing ridiculous amounts of [[{{Bishonen}} beauty]], wealth, and talent. Yet whenever Wataru crosses paths with him, Yuichi never fails to be [[{{Jerkass}} snarky and insulting]] towards him. Karin, Wataru's sister, comments that this must mean that Yuichi either ''really'' hates him... or ''really'' likes him. Guess which one it turns out to be.

* In ASongOfIceAndFire, crazy Lysa Arryn is largely motivated by her love for Littlefinger, [[MagnificentBastard who uses this to his advantage]]. And as implied by his actions, ie: [[spoiler: kicking off a continent-wide war]] Littlefinger himself has been left [[{{Yandere}} mentally unstable]] by his [[UnluckyChildhoodFriend unrequited love]] for Lysa's sister, Catelyn Stark.

* [[InvokedTrope Invoked]] by Katniss and Haymitch at the end of ''TheHungerGames''. She needs the Capitol to think she pulled the stunt with the berries because she was crazy in love with Peeta, and not because she was trying to be rebellious and undermine the Games.

* Nearly everyone in ''PushingDaisies'' is a victim of this, and it's not always even romantic love.
* In ''{{Jekyll}}'', [[spoiler:Tom's mother explains in the final episode. "People think that Hyde is rage. Or hate. Or greed. Or lust.... But Hyde is far worse. Hyde is love -- and love is a psychopath."]]
* ''Series/ICarly'': Ms. Ackerman wants to know where Spencer is for every minute of every day, and actually keeps logs on when he doesn't answer his phone.
** In a platonic!love ([[LesYay or not?]]) kind-of way, Sam got really, really mad when Carly was harassed by a bully in "''iMake Sam Girlier''"
* ''Series/BuffyTheVampireSlayer'': Don't ever hurt or kill one of Willow Rosenberg's girlfriends, lest you want to end up [[spoiler: flayed alive.]]
** "Love makes you do the wacky." -- said twice in the episode ''Some Assembly Required''. First time by Willow, in reference to Angel's jealous behaviour toward Xander, and then by Buffy, about why a classmate revived his brother as a sort of Frankenstein's monster.

* ''NoahsArc'': [[spoiler:Dre goes to crazy lengths to get Alex out of the picture so he can be with Trey, setting up a BatmanGambit to turn Trey and even Alex's friends against Alex. It's bizarre even by TV drama standards]].
* Often a case with patients in ''{{ER}}''. After the death of his granddaughter caused by a crazy bomber who happened to be taken into the same hospital, the man who was previously shown to be friendly and calm went and strangled the guy to death. When Gates's best friend's wife finds out he was dating Neela, she got drunk, went to the ER and flew into a rage at both Gates and Neela. In another instance, when a man found out his girlfriend was dying, he brought in a gun and threatened the doctors working on her to continue working on her and bring her back, even though her heart had stopped.
* Characters of ''AsTheWorldTurns'' often go to pretty extreme extents for their family and love interests.
** This is actually a standard trope of ''many'' {{Soap Opera}}s, usually combined with DerailingLoveInterests as heretofore normal, decent people, usually [[UnfortunateImplications women]], go completely off the deep end in an effort to hang onto or seek revenge on former love interests.

* {{Torchwood}}: There's [[HotterAndSexier a lot of love]]... and [[DarkerAndEdgier a LOT of insanity.]]
* Cole in ''Series/{{Charmed}}''. It may have also [[LoveMakesYouEvil made him evil]], [[HeelFaceRevolvingDoor again]], but then again [[BadPowersBadPeople it could have been all the demonic powers he absorbed.]]
** Then again again, he absorbed all those powers in order to be able to return to the mortal plane to be with her again.
* In DesperateHousewives, Edie, who up until that point was a casually promiscuous woman who was more bitchy and snarky than actually crazy. Once she starts having a liking for Carlos, suddenly she starts going completely insane and even attempts suicide just to get his attention.

* TaylorSwift's song ''The Way I Loved You'' is all about this trope. "I'm so in love that I acted insane; that's the way I loved you."

* In ''{{Pink}}'s'' "Please Don't Leave Me" she slowly goes insane when her boyfriend attempts to leave her.

* Many of RandySavage's angles that involve Miss Elizabeth invoke this trope.

* Salome, the former disciple of ''MakaiKingdom'''s Overlord Zetta, whose crush on said Overlord goes into this trope on the ''deep'' end. [[spoiler:She willingly started channeling her own mana into Zetta without his knowledge or consent, slowly killing herself to make him stronger.]] Upon learning that Zetta has been cursed by The One and has only two days to live, Salome, who is dying herself, then tries to make Zetta marry her so they can [[TakingYouWithMe die together]]...by ''crashing her own netherworld into Zetta's'' and eventually provoking him into killing her.

* In ''VideoGame/PrinceOfPersia2008'', [[spoiler:the Prince destroys the trees that sealed Ahriman again to revive Elika]].
** That's more a case of LoveMakesYouDumb.
** Or it might be a case of Love Makes You Genre Savvy, as the epilogue [[spoiler: Establishes that he did this because he knows the prison can't hold, and he'd rather face Ahriman now with Elika's help, then to face him without her down the line.]]

* This is how the original ''Blood Omen: LegacyOfKain'' begins: When Nupraptor the Mentalist, guardian of the Pillar of the Mind, discovers that his lover Ariel, guardian of the Pillar of Balance, has been murdered in cold blood, he goes completely insane and secludes himself in his mountain retreat. Which wouldn't be so bad by itself, except he has a mental link with all the other Pillar guardians, who all become corrupted by his madness in turn.

* In ''VideoGame/CityOfHeroes'', the [[BrainInAJar Clockwork King]] is hopelessly in love with Penelope Yin, a young [[PsychicPowers psychic]]. His love for her manifests in the [[ClockworkCreature Clockwork Army]] which he uses to [[WellIntentionedExtremist keep her safe from heroes]] and other boys.
** His [[MirrorUniverse Praetorian counterpart]] [[OurGhostsAreDifferent Metronome]] has the same feelings for his world's Penelope. [[spoiler: He wants to [[UnwantedRescue rescue]] her from Mother Mayhem's mental hospital by transferring her soul into a [[SuperPoweredRobotMeterMaids Praetorian Clockwork]] body.]]
* This is PlayedForLaughs in [[VisualNovel/UminekoNoNakuKoroNi George's]] ImageSong, "Ai no Sengen". Yeah, that's right. Played. For. Laughs. If you want [[{{Necromantic}} the]] [[LoveMakesYouEvil more]] [[MadLove tragic]] [[{{Yandere}} versions]], you can certainly find that in many other parts of the series.

* If Usso fights Laodecia in the final Space Scenario of VideoGame/ShinSuperRobotWars, Fala will show up, vowing to pay back the debt she owes Laodecia. When Usso protests, she tells the little boy to shut up, saying that only a strong man like Laodecia can satisfy her - and Tashiro wasn't up to the task.

* [[spoiler:EVERYONE]] in UminekoNoNakuKoroNi. It's true that while [[spoiler:Beatrice]] may be the craziest since [[spoiler:she killed everyone in the Ushiromiya family, as well as a few servants, and a doctor because Battler came to Rokkenjima at the wrong time]], but [[spoiler:EVERYONE]] has their moment where love drives them bonkers.

* In ''DrawWithMe'', the boy [[spoiler: tries to get through the unbreakable (instantly repairing) glass and loses his hand for it. And then the girl cuts off her own hand to give to him to use to draw. (ItMakesSenseInContext.)]]
* Neomutant from "WebAnimation/TOME" became a hacker in TOME just so he can protect his obsession, Flamegirl, from her actual Love Interest, Alpha. This help is nether needed or wanted by nether the girl or the love interest. He has also been in pursuit of her for an entire year, and is seen as being extremely 'dense', as well as selfish, when in regards to Flamegirl. To the point of attacking her love interest within two seconds of being revealed.

* In ''TheDreamer'', Alan infiltrates Gen. Howe's ship just to rescue Beatrice.
* There's a mild version in PennyAndAggie, where Duane [[http://www.pennyandaggie.com/index.php?p=832 reflects]] on how his crush on Penny affected him.

* ''Webcomic/ElGoonishShive'' got Melissa, UnluckyChildhoodFriend of Justin. Who told her he isn't attracted to her because he's gay. So she shared this grief with her rumour-mongering sister and everything quickly rolled downhill from there. She had fits of delusion that she could seduce Justin and [[SetRightWhatOnceWentWrong revert the break]] if she tried harder -- until he couldn't stand hearing her name. Sometimes managed to DopeSlap herself out of this, got another boyfriend, but... still continued to slip into this. [[spoiler:They seem to become able to interact normally only after facing a bigger and more immediate problem together.]]

* Narbonic inverts this. The main character is already insane. Turns out she's more ''normal'' now than before she met her crush and love interest.

* ToddInTheShadows' [[StalkerWithACrush love]] for ObscurusLupa reaches this.

** In return, WebVideo/TheNostalgiaChick keeps going further into insanity (and she wasn't exactly all there anyway) for Todd. On facebook, she's even willing to have sex with his corpse.

* That wolf from the TexAvery cartoons!
* ''WesternAnimation/KimPossible'''s interactions with recurrer Josh Mankey (and a few other select young men) cause her to do some irrational things when she really ought to know better. Josh isn't actually a bad guy, but fans tend to [[DieForOurShip vilify him for the influence he holds over Kim]]. Trouble with romantic relationships remains her major AchillesHeel for the entire series, to the point that Dr. Drakken's ultimate plan to stop her from interfering during TheMovie involves a new boyfriend. Sidekick Ron is not much better, doing crazy stuff for almost any reason all the time, but on Kim it's far more noticeable given [[CompressedVice her usual hyper-competence and level-headed nature]]. By contrast, her RelationshipUpgrade with Ron in Season 4 has so far had no negative effects on her behavior.
* The Maximal Silverbolt in ''{{Transformers}}: WesternAnimation/BeastWars'', despite being as heroic and noble as they come, did some highly illogical things for the love of the Predacon Blackarachnia, mainly because of the aforementioned heroism and nobility. Of course, in the end he was right about her, but it was foolish at the time, and he was punished for it. In this case, the other Maximals thought love had made him crazy, when in fact he just had some insight.
* All over the place in ''HeyArnold''. Besides Helga's complete obsession with Arnold, whenever Arnold is around Ruth (and later, Lila), he ends up acting very nuts indeed.

* ''CampLazlo'': Patsy lies to Lazlo that she is a professional snake hunter who knows Kung Fu. Lazlo believes her, until they end up running from a (tiny, cute) snake and are cornered. Patsy confesses to having lied, and Lazlo asks why.

* Trixie from ''WesternAnimation/TheFairlyOddParents'', in the episode where Timmy wishes the two of them were the last people on Earth. This is weird, since [[CompressedVice she was sane relative to everyone else on the show before]].
** The reason she's crazy is because she's used to many people being interested in her instead of you know... ''being one of the two last people on Earth.''

* ''FostersHomeForImaginaryFriends'': One episode featured a newcomer called Berry. Berry is initially sweet and polite, but once she develops a crush on Bloo she turns into psychotic GreenEyedMonster who continually [[FriendVersusLover tries to get rid of Bloo's best friend Mac so that she can have Bloo to herself]].

* ''CodeLyoko'': Where to begin?

* ''WesternAnimation/BatmanTheAnimatedSeries''. Hoo, boy, Harley Quinn. She falls in love with SelfDemonstrating/TheJoker of all people, and is as crazy as he is -- perhaps worse, since she's treated as callously as anyone. Her story of meeting The Joker is the TropeNamer for MadLove.
* ''ThePenguinsOfMadagascar'''s Rico is already CrazyAwesome, but when love comes into the equation...

* ''KickButtowski'' gives us Jackie... aptly nicknamed "Wacky Jackie" by many of the characters on the show.
* In the ''WesternAnimation/TeenTitansGo'' episode "The Date", this is very clearly the case with Robin in regards to Starfire. Nicely [[LampshadeHanging lampshaded]] by the voice in Robin's head, who points out excactly what ''kind'' of crazy love is making him.

* {{Eminem}} and Kim Mathers

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* Bus Driver Stuart Benedict, of ''TheAdventuresOfPeteAndPete''. Almost every time we see him, he's just been dumped by his on-and-off girlfriend Bus Driver Sally Knorp, and he reacts increasingly poorly. On various occasions, the break-up has caused him to spend the bus ride home giving a six-hour tour of important locations in his and Sally's life; go insane upon hearing "If Your Happy and You Know It"; and drive to the Arctic, tattoo her name to his chest, strap himself to an iceberg and drift out to sea (though we don't know if he went through with that last one. He shows up again afterwards, so he probably didn't.)

** Um, I know that it's ''there'', all right, but are you sure it was supposed to be a ''theme''?

* In ''Literature/WarriorCats'', there is Ashfur. After being dumped by Squirrelflight, he [[spoiler: Attempts to kill her father, and later her children]], to make her feel the same pain he did.

** Isn't that more [[PostKissCatatonia Post-Kiss Catatonia?]]

--> [[http://thatguywiththeglasses.com/videolinks/teamt/nash/wtfiwwy/32368-this-is-all-your-fault-electric-boogaloo I've had my car stereo]] rigged to play "Making Love" out of nothing at all. I've received more drunk dialing more than anyone who ever dated CharlieSheen. And I've had live bunnies airdropped into my house.

[[folder:Theater]]
* Polonius is initially convinced that Theatre/{{Hamlet}}'s recent wacky behavior is caused by his love for Ophelia. His attempt to set up a sting operation to prove his theory ends with an apparently-deranged Hamlet ranting that he'd never loved Ophelia, and that she'd best go be a nun [[GetTheeToANunnery (or a whore, depending on your interpretation)]]. So much for that idea.
* In ''Theatre/AMidsummerNightsDream'', Helena is aware that her passion for Demetrius is wacked out even before she betrays Hermia and Lysander to him.
-->''And as he errs, doting on Hermia's eyes,\\
So I, admiring of his qualities:\\
Things base and vile, folding no quantity,\\
Love can transpose to form and dignity:\\
Love looks not with the eyes, but with the mind;\\
And therefore is wing'd Cupid painted blind:\\
Nor hath Love's mind of any judgement taste;\\
Wings and no eyes figure unheedy haste:\\
And therefore is Love said to be a child,\\
Because in choice he is so oft beguiled.''
* ''Theatre/{{Othello}}'' insists that his flaw is that he "loved not wisely, but too well." Of course, being a HorribleJudgeOfCharacter doesn't help either.
[[/folder]]

* In ''VisualNovel/LuxPain'', [[spoiler:this happens to Yui after Mako dies. She eventually tries to kill Tanaka as revenge for Mako's death.]]

->'''Trinity:''' You wanna make a deal? How about this? [[MexicanStandoff You give me Neo or we all die, right here, right now]].
->'''Persephone:''' She'll do it. If she has to, she'll kill everyone here. She's in love.
->'''The Merovingian:''' [[LampshadeHanging It is remarkable how similar the pattern of love is to the pattern of]] ''[[LampshadeHanging insanity]]''.

-->'''Thor''': This is madness!
-->'''Loki''': Is it madness? Is it? ''IS IT??!!''

---> ''So why am I here at your door, at your door.''
---> ''If I was sane, I'd take my crazy behind,''
---> ''And get back in my BMW''

---> '''Violetta''': And here I kept expecting you to ''attack'' him.
---> '''Vole''': Dun be ''schtupid''. She vould ''rip my fangs out''.