History Main / LoveMakesYouCrazy

** The [[EvilWeapon demonic blade]] Saika is intelligent and desperately loves humanity. Apparently she once loved individual humans, but by the time of the story this has twisted into a generic love for the human race. Unfortunately, as a sword, [[WhenALlYouHaveIsAHammer the only way she can demonstrate this love is by cutting people]]. Every time she cuts someone, they are "impregnated" with a child that [[TheVirus shares Saika's love for humanity and starts to cut more people]]. [[spoiler:Saika's current wielder, Anri, is immune to Saika's control due to her lack of ability to love, and uses Saika to stop the children]]. Saika is even more {{Yandere}} than usual for Shizuo Heiwajima, [[BeyondTheImpossible the most ridiculously overpowered human being alive]]. [[spoiler:This causes problems for Anri, who gets some very strange feelings whenever she sees Shizuo]].

[[folder:Anime & Manga]]

* ''FantasticBeastsTheCrimesOfGrindelwald:'' [[spoiler: Queenie Goldstein falls in love with Jacob Kowalski, and is desperate to marry him. While he ''does'' reciprocate, the reason he refuses to marry her is because it would mean the MACUSA would throw her in jail. She starts to become irrational and possessive, going so far as to enchant him and drag him into the UK to get married. When Jacob thinks she's crazy for this, she leaves in a huff for Paris. [[FromBadToWorse Then she's persuaded to join Grindelwald's cause]] because she's naive (or desperate) enough to think that his vision of wizards living openly will mean that she and Jacob can marry - even though it's obvious from the subtext in his speech that he thinks of non-magical people as less than human. When Jacob (who was with her at the speech) begs her not to join Grindelwald, it doesn't take.]]

** Season 7, episode 8. Enough said.

* It's not romantic love, but Loki's love for his [[spoiler: adopted]] father and home (and by extension, mother and brother) in ''Film/{{Thor}}'' and his desire to be loved as a son on par with Thor drives all his schemes and ambitions (and the plot). He eventually becomes a (literal) WoobieDestroyerOfWorlds, and when Thor calls him out on his actions, his composure deserts him.

* Poor [[Anime/CodeGeass Nina Einstein]]. She started as an inoffensive ShrinkingViolet, only to develop a crush on [[RebelliousPrincess Princess Euphemia]] after she saved Nina (and others) from terrorists, and went kinda [[PsychoLesbian loopy]], earning her the label of TheScrappy among the fandom. Then things went worse: [[spoiler:Euphemia is killed by the terrorist Zero, which sends Nina off the deep end, leading her to develop the world's first atomic bomb. It fails, but the Britannians hire her as a researcher, and eventually her perfected bomb leads to the destruction of a good chunk of Tokyo and the ten million people in it. Not helping matters at all is the fact that she was practically rabid in ordering its use up until she saw the SphereOfDestruction (and the 35 million deaths) it caused, only then getting her MyGodWhatHaveIDone moment.]]

** In a later episode, it appears this is happening with Dawn when she falls for a jock. It turns out, there was a spell involved and HilarityEnsues.

** Shinra Kishitani has been in love with Celty, the headless rider (and the body that goes along with the head that Seiji is in love with) ever since he was a little kid. On the day they met, his father vivisected Celty and invited Shinra to help. Shinra has been telling people ever since that he's going to marry Celty one day, and tries to encourage her to abandon searching for her lost head because he's afraid when she gets her memories back, she'll be a different person. [[spoiler:When she does find it (and turns out to be the same person as before, just with new responsibilities), he ends up using a SoulCuttingBlade to separate her from it again. She forgives him, [[AllLovingHero as he expected]].

* Ciel is implied to be this way for his fiance Elizabeth in ''Manga/BlackButler''. Under any other circumstances, Ciel would not go anywhere near the big, creepy castle without Sebastian. Unless, of course, Elizabeth has gone missing and he has every belief that she is in there and in trouble. Then he'll do anything. Including giving Grell pretty much permission to rape Sebastian in exchange for backup. Not crazy enough for you? How about after he realizes all the girls in the castle are living dolls, he ditches Grell in order to run deeper? And still keeps looking for Elizabeth after being told he was next to be turned into a doll?
%%** Grell is like this for Madame Red and later Sebastian.

* In ''VideoGame/PrinceOfPersia2008'', [[spoiler:magical waif Elika [[HeroicSacrifice sacrifices her life]] to reseal BigBad Ahriman back into his can. The Prince, fallen in love with her and devastated by her death, destroys the trees that sealed Ahriman again to bring her back to life]]. It's either a case of LoveMakesYouDumb or Love Makes You GenreSavvy, 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. She ''[[WhatTheHellHero clearly really doesn't]]'' agree with his choice though.]]

** To start with, Seiji Yagiri falls in love with a severed head and spends years obsessing over it. He even drops out of school over it. His sister Namie enables this behavior [[BrotherSisterIncest because she is in love with him,]]. [[spoiler:and ends up losing her company after she makes too many bad plays for Seiji's sake]].

** Shinra Kishitani has been in love with Celty, the headless rider (and the body that goes along with the head that Seiji is in love with) ever since he was a little kid. On the day they met, his father vivisected Celty and invited Shinra to help. Shinra has been telling people ever since that he's going to marry Celty one day, and tries to encourage her to abandon searching for her lost head because he's afraid when she gets her memories back, she'll be a different person.

* ''LightNovel/{{Durarara}}'': [[EvilWeapon Saika]] actually has this as a ''power''. She takes control of her main host by slowly wearing them down with incessant whispers and promises that she can give them any friend, companion or lover they want if they just sit back and let her handle it ("handle it," of course, being defined as "stab the target and infect them with TheVirus so that they become an unquestioning slave to the HiveMind"). It's only by virtue of being a BrokenBird that [[WhatIsThisThingYouCallLove doesn't really get what love actually is]] that her current host, [[spoiler:Anri Sonohara]], has been able to resist it for five years and counting.

* JoJo says herself when singing about her "Boy Without A Heart"

* ''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 {{Trope Namer|s}} for MadLove.

* ''WesternAnimation/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]]. Bloo, on the other hand, is oblivious to her crush (he can never remember her name or, in some cases, her existence) but he gives Berry mediocre compliments that somehow convince Berry that he loves her as well.

%%* Zorg in ''Film/BettyBlue''. Betty was already crazy

* In ''VideoGame/PrinceOfPersia2008'', [[spoiler:the Prince destroys the trees that sealed Ahriman again to revive Elika]]. It's either a case of LoveMakesYouDumb or 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.]]

* [[spoiler:Seimei]] from ''Manga/{{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]]?