History Film / TheBoyNextDoor

* MoralEventHorizon: Noah may start to lose any hope for redemption when he stalks Claire and refuses to leave her alone, but he immediately loses any hope of it by the time he vandalizes the school bathroom and attempts to rape her

* OedipalComplex: Noah becomes dangerously obsessed with Claire, the single mother of his best friend, who says she's old enough to be his mother. [[spoiler: When it's revealed that Noah's mother committed suicide due to his father cheating and Noah, as revenge, murdered his father and his mistress... doesn't prove to help this]].

* MyGodWhatHaveIDone: Claire's reaction the morning after spending the night with Noah. She's instantly horrified by her actions, even more so when realizing he's become her personal student.

* AsthmaPeril: Kevin has asthma, and nearly dies from an asthma attack in gym class after he's being bullied. Noah manages to help Kevin by giving him [[PlotAllergy an [=EpiPen=]]], which [[ArtisticLicenceMedicine magically saves him.]]

* AttemptedRape: Noah tries to have his way with Claire in the boys' bathroom during the Fall Fling, believing that he can remind her how nice their first time together was. She promptly [[GroinAttack kicks him in the crotch]] and runs away.

''The Boy Next Door'' is a 2015 thriller movie starring Creator/JenniferLopez, Ryan Guzman, and Creator/JohnCorbett.

''The Boy Next Door'' is a 2015 thriller movie starring Music/JenniferLopez, Ryan Guzman, and Creator/JohnCorbett.

* AttemptedRape: Noah tries to have his way with Claire in the boys' bathroom during the Fall Fling, believing that he can remind her how nice their first time together was. She promptly [[GroinAttack kicks him in the crotch]] and runs out of there.

* EvenBadMenLoveTheirMamas: [[spoiler:Noah loves his mother very much. Because she killed herself due to her husband's unfaithfulness, Noah got his revenge by killing his father and his mistress.]]
* EyeScream: [[spoiler:Claire stabs Noah in the eye with one of Kevin's epipens and later pokes the same eye with her finger.]]

** A shot of Noah's backside as Claire watches him naked from her window.
* FreudianExcuse: [[spoiler:Noah's father had an affair with another woman and his mother killed herself because of it. As such, he killed his father and his mistress eventually developing a dangerous obsession with finding a replacement ParentalSubstitute and lover in the form of Claire.]]

* LifetimeMovieOfTheWeek: It has the makings of a Lifetime movie. A married woman finds out that her husband cheated on her, her relationship with her son is going awry, and she contemplates a divorce. Then she has a one-night stand with a younger man and, rather than leave her alone, stalks her, almost rapes her and tries to make her his by blackmailing her and killing everyone in her life. The ending cements this with her [[spoiler:fighting off the guy and effectively killing him when he attempts to shoot her son.]]

* MurderTheHypotenuse: Viewing Claire's family and Vicki as threats towards his "relationship" with Claire, Noah attempts to kill her husband and son [[spoiler:and does succeed in killing Vicki.]]

* OedipalComplex: Noah, who becomes dangerously obsessed with Claire, the single mother of his best friend Kevin who says she's old enough to be his mother. [[spoiler:The revelation that Noah's own mother committed suicide due to his father cheating and then Noah murdered his philandering father and father's mistress out of revenge for his mother doesn't help either]].

* PapaWolf: Played with. Noah takes on this role while befriending Claire's son Kevin. Saving his life from an anaphylactic shock with his EpiPen and bashing the bullies when they pick on Kevin.

* ScrewThisImOuttaHere: When Noah attacks one of the bullies threatening Kevin, the bully's gang see Noah and run away.
* SelfMadeOrphan: [[spoiler:After his mother killed herself, Noah killed his father and his mistress, blaming them for his mother's death.]]
* StacysMom: From the first meeting on, Noah spends his time hanging out with Kevin in order to be closer to the attractive Claire.

** Claire's husband cheated on her with another woman during a business trip. She became paranoid about any business trips he took afterwards, fearing they were just his excuse to go out and see other women.
** Because of the former and current leanings of a divorce, Claire cheats on her husband by having a one-night stand with Noah, leading to his dangerous obsession with her.
** [[spoiler:The backstory for Noah's family involves his father being unfaithful to his mother. Because of the affair, Noah's mother committed suicide and his father went on to have a relationship with his mistress.]]
* {{Yandere}}: Noah. He starts out as a NiceGuy who is living next to Claire and her family. He develops a somewhat innocent crush on her and bonds with her over their shared interests. When he seduces her, he asks her to let him love her. After their one-night stand, he tries to develop a more intimate relationship with her and does things like make breakfast for her and sending her flowers as an apology for his behavior. However, once she makes it clear she's not interested and is even going to reconcile with her husband, he becomes violent, possessive and manipulative. He's even willing to destroy her credibility as a teacher with video and pictures of their one-night stand unless she became his girlfriend. [[spoiler:He was also willing to kill her best friend, husband and son, believing that he could finally have Claire's love with them gone.]]

* PapaWolf: Noah takes on this role (in his own weird way) while befriending Claire's son Kevin. Saving his life from an anaphylactic shock with his EpiPen and bashing the bullies when they pick on Kevin.
* ReplacementGoldfish: [[spoiler: It's implied Claire could be this for Noah on a maternal and romantic level due to his own mother committing suicide.]]

* StacysMom: From the first meeting on, Noah spends his time hanging out with Kevin in order to be closer to Kevin's mother Claire.
* StalkingIsLove: At least, that's what Noah believes but for Claire, it's just downright creepy.
* StalkerShrine: When Claire infiltrates Noah's house to delete the pictures and video of her and Noah, she finds a wall plastered with pictures of her.

** Claire's husband cheated on her with another woman during a business trip. She was initially paranoid about any business trips he took afterwards, fearing that he was seeing other women.
** Because of the former and current leanings toward a divorce, Claire cheats on her husband with Noah, leading to his eventual dangerous obsession with her.
** [[spoiler:The backstory for Noah's family involves his father being unfaithful to his mother. Because of the affair, Noah's mother committed suicide and his father went with the other woman.]]
* {{Yandere}}: Noah. He starts out as a nice guy who lived next to Claire and her family. He develops a somewhat innocent crush on her and bonds with her over their similar interests. When he seduces her, he asks her to let him love her. After their one-night stand, he tries to develop a more intimate relationship with her and does things like make breakfast for her and sending her flowers as an apology for his recent behavior. However, once she expresses the possibility of returning to her husband, he becomes violent, possessive and manipulative. He's even willing to destroy her credibility as a teacher with video and pictures of their one-night stand unless she became his girlfriend. [[spoiler:He was also willing to kill her best friend, husband and son, believing that he could finally have Claire's love with them gone.]]

* AttemptedRape: Noah tries to have his way with Claire in the boys' bathroom during the Fall Fling, believing that he can remind her how nice their first night together was. She promptly [[GroinAttack kicks him in the crotch]] and gets out of there.

* BigBrotherInstinct: Noah seems to take on this role with Kevin. He helps him get the girl he likes, saves him when he has an allergic reaction and fends off some bullies, albeit almost killing one of them. It's possible that he was trying to act like a paternal figure for Kevin, believing that he might have become his stepfather. [[spoiler:He drops this behavior near the end, wanting him dead for coming between him and Claire.]]
* BittersweetEnding: Vicky is dead, but Noah has finally been stopped and Claire has saved her family including making amends with her ex husband.

* CountryMatters: Noah says this to Vicki the vice principal in an argument, along with some other nasty threats at the high school. So offensive to her that Vicki attempts to slap him across the face -- only for Noah to stop her mid-slap, leading to Vicki to finally expel him from the school
* CrazyJealousGuy: Noah becomes one after Claire considers getting back with Garret. He pulls into her driveway and accuses her of toying with him even though he previously agreed to start over with her as friends.

* DoubleEntendre: Noah drops two of these about his one-night stand with Claire, much to Garret and Kevin's oblviousness.

* FanDisservice: Noah attempting to force himself on Claire in the school bathroom.

* GenreShift: It starts off like a romantic drama for the first third of the movie, but then turns into a psychological horror for the other two thirds.
* IfICantHaveYou: [[spoiler:When Claire begins fighting Noah, he attempts to strangle her twice and murder her family.]]

* ItMeansNothing: Claire's reaction to her one night stand with the younger Noah.
* ItMeantSomethingToMe: Their one night stand meant more to Noah than it did to Claire, so he doesn't take it well when she tells him it was a mistake and that they should just stay friends.

* LoveMakesYouEvil: Noah's pursuit for Claire leads him to stalk her, blackmail her, and commit murder.

* MamaBear: Claire becomes one for her son. [[spoiler:When Noah is about to shoot her son, she drops an engine block on him, killing him instantly.]]
* ManipulativeBastard: Noah threatens to expose pictures and video of his one-night stand with Claire unless she becomes his.

* MyGodWhatHaveIDone: Claire's reaction the morning after spending the night with Noah.
* NotGoodWithRejection: The main plot is a result of Claire not getting together with Noah after their one-night stand.
* NotStayingForBreakfast: After her one-night-stand with Noah, Claire immediately regrets it and tries to leave as soon as possible, just as Noah walks in to surprise her with a breakfast tray.

* BitterSweetEnding: Vicky is dead, but Noah has finally been stopped and Claire has saved her family including making amends with her ex husband.

* StacysMom: From the first meeting on, Noah spends his time hanging out with Kevin in order to be closer to Claire.

* ChekhovsGun: Kevin's EpiPen.

* CatScare: When searching through Vicki's home, Claire gets scared by a cat yowling -- [[spoiler: before coming across Vicki's dead body]]

* YourCheatingHeart: A reoccurring theme for the movie.
** Claire's husband cheated on her with another woman during a business trip. She was initially paranoid about any business trips he took afterwards, fearing that he was seeing other women.
** Because of the former and current leanings toward a divorce, Claire cheats on her husband with Noah, leading to his eventual dangerous obsession with her.
** [[spoiler:The backstory for Noah's family involves his father being unfaithful to his mother. Because of the affair, Noah's mother committed suicide and his father went with the other woman.]]

* CountryMatters: Noah delivers this to Vicki the Vice Principle in an argument, along with some other nasty threats at the high school. Such offensive to her that Vicki attempts to slap him across the face -- only for Noah to stop her mid-slap, leading Vicki to finally expel him from the school

* RomanticFalseLead: During her separation from her cheating husband, Claire takes an interest in Noah, her next door neighbor who seems like the perfect guy for her and her son to get along with but even after his unapologetic charm and seduction towards her followed with them spending a night of passion together, Claire immediately discovers that Noah is not as perfect as he seems, prior to his violent outburst after she (though kindly) rejected him and this alone slowly drives her back to reconciling with her husband.