History Main / FlirtyStepsiblings

* The manga ''YoruMadeMatenai" is built around this trope, with a wee bit of borderline ShotaCon fanservice.

* This is the starting point of an h-manga titled ''GiriGiriSisters'': [[{{Tsundere}} Mion]] has fallen in love with her classmate Tsukasa, but [[CanNotSpitItOut before she gets up the nerve to confess]], her widowed or divorced mother marries his widowed or divorced father. Compounding the problem, her younger but much curvier sister Kotone is also hot for their new stepbrother, and not at all shy about saying so and demonstrating it. The good news is, Kotone's not just willing but eager to [[TenchiSolution share Tsukasa with her big sister]]....

* ''CruelIntentions'' ramps this trope UpToEleven, with the plot driven by a girl promising her besotted stepbrother sex if he does what she wants.
** ''NotAnotherTeenMovie'' parodies this with the [[strike:step]]brother being utterly repulsed at the idea, but going along with TheBet for other reasons.

* ''DriveMeCrazy'' has a variant of this -- [[spoiler: the two teenagers have a mostly-normal romance, and their parents get married at the ''end'' of the movie.]]

* ''LosSerrano'' has the relationship inbetween Marcos and Eva. {{Lampshaded}} in a dream sequence ([[spoiler: [[ItWasHisSled despite the series itself being]] AllJustADream, but anyway]]) where Marcos says their relationship isn't incest, "more like stepincest".
* From the Taiwanese drama DevilBesideYou, Qi Yue was being bullied by the son of the school's president, Jiang Meng, only to [[AllGirlsWantBadBoys fall in love with him]], after realizing that he was a JerkWithAHeartOfGold and actually a decent guy. Before either of them could understand their feelings, her widowed mother and his divorced father began dating, eventually becoming engaged. One of the main conflicts of the story is the main couple trying to work out their relationship amidst their parents' relationship as well.

* Now that their parents are married [[{{Glee}} Kurt and Finn]]. It certainly didn't help that the title of the episode was "[[FanNickname Furt]]". Finn even sang a song for him! Of course, Kurt originally tried to get Burt and Carole together in an attempt to [[InvokedTrope invoke this]], as he had a crush on Finn for months beforehand ([[{{Understatement}} it didn't go very well]]).

* ''MartinMystery'': It takes the subtext to the nth degree. [[GettingCrapPastTheRadar They were really pushing it to the limit.]]
** That's what happens when you take characters who were lovers in the original comic and [[SiblingSwitchSquick turn them into]] NotBloodSiblings.

[[folder: Real Life]]
* Real Life example: When working on a genealogical chart I found a case where both sets of parents of a married couple divorced. Then the man's father married the woman's mother. So the man's mother-in-law also became his step-mother. Not wicked though, I understand.
** Were the married couple's children [[TheSimpsons horrible freaks with pink skin, no overbites, and five fingers on each hand]]?
** Something like this actually happened on ''TheFreshPrinceOfBelAir'': Will's mother and Lisa's father [[IfYouKnowWhatIMean take a liking to each other]], and after their kids decide (at the altar) that they're not ready to be married, their parents step up, saying "Why waste a perfectly good ceremony?"
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** ''NotAnotherTeenMovie'' parodies this with the stepbrother being utterly repulsed at the idea, but going along with TheBet for other reasons.
*** Actually it later turns out when he protest's against such advances because she's his sister she responds ''"[[RuleOfFunny only]] [[CrossesTheLineTwice by]] [[RefugeInAudacity blood]]"''.

* Another rated manga example, "Ai Don't Koi" from Yasuhira Nakanishi. The main character struggles between two choices: one is his UnluckyChildhoodFriend whom he always thinks of as a little sister, another is the girl whom he had a gigantic crush on - until her [[HotShonenMom mother]] married his [[{{Casanova}} father]].
* Yuka and Atsuro from the manga version of SensualPhrase.

Usually this is seen in the undertones of their behaviour in a show, and it almost always happens when two people become step-siblings in adolescence. Sometimes though, this is unintentional on the part of the writers and attempts to make new step-siblings act like a real brother and sister [[RelationshipWritingFumble just come off as flirty]].

* Morgana and Arthur in {{Merlin}} had a [[{{UST}} very charged]] reletionship in Season 1.

** Now that their parents are married [[{{Glee}} Kurt and Finn]]. It certainly didn't help that the title of the episode was "[[FanNickname Furt]]". Finn even sang a song for him!

* In the Amelia Peabody books, Ramses and Nefret were raised as siblings from the ages of ten and twelve, respectively, but ended up falling in love and marrying, albeit with some compications.

* From the Taiwanese drama ''The Devil Beside You'', Qi Yue was being bullied by the son of the school's president, Jiang Meng, only to [[AllGirlsWantBadBoys fall in love with him]], after realizing that he was a JerkWithAHeartOfGold and actually a decent guy. Before either of them could understand their feelings, her widowed mother and his divorced father began dating, eventually becoming engaged. One of the main conflicts of the story is the main couple trying to work out their relationship amidst their parents' relationship as well.

** "The Crystal Cave" [[spoiler:reveals that Uther is Morgana's biological father, having had an affair with Gorlois' wife Vivienne]].

Usually this is seen in the undertones of their behaviour in a show, and it almost always happens when two people become step-siblings in adolescence. Sometimes though, this is unintentional on the part of the writers and attempts to make new step-siblings act like a real brother and sister just come off as flirty.

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* ''MarmaladeBoy'' which also has the teens' parents switching partners then all deciding to live together in one big house.
* Though not teen-aged, Erio and Caro from ''MagicalGirlLyricalNanoha StrikerS'' were both technically adopted by Fate and, as shown in the companion manga, think of themselves as step-siblings. However, their relationship is so close as to be romantic that even other people in-universe [[ShipperOnDeck tried to push them toward each other]]. Hell, as mentioned in the OfficialCouple page, by the classic definition of trope -- both being overtly paired off and it seems understood by the cast that the two are an item -- they pretty much are one.
** Actually pretty much does become official as of ''Force''.
* This is the starting point of an h-manga titled ''GiriGiriSisters'': [[{{Tsundere}} Mion]] has fallen in love with her classmate Tsukasa, but [[CanNotSpitItOut before she gets up the nerve to confess]], her widowed or divorced mother marries his widowed or divorced father. Compounding the problem, her younger but much curvier sister Kotone is also hot for their new stepbrother, and not at all shy about saying so and demonstrating it. The good news is, Kotone's not just willing but eager to [[TenchiSolution share Tsukasa with her big sister]]....
* ''KissxSis'' is about two twin sisters who love their stepbrother [[UnderStatement very much]]. Their mom and the guy's dad approve. Only the guy doesn't. HilarityEnsues.
* Another rated manga example, "Ai Don't Koi" from Yasuhira Nakanishi. The main character struggles between two choices: one is his UnluckyChildhoodFriend whom he always thinks of as a little sister, another is the girl whom he had a gigantic crush on - until her [[HotShonenMom mother]] married his [[{{Casanova}} father]].
* Yuka and Atsuro from the manga version of SensualPhrase.

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* ''CruelIntentions''
* ''{{Clueless}}''