Girl Next Door (2000) aka Tonari no Onee-san
Masahiko’s lady boss, whose husband is out of town, stalks virgin boys in the park at night.
minor plot point
Who Killed Cock Robin? (2017)
A guy drives his pretty co-worker home after a work party. He is able to console her on her boyfriend problems and as a reward, he gets to screw her.
Elven Bride (1995)
A non-human doctor uses both his profession and his magical powers to seduce and bang his patients that are mostly hot wives.
Valley of the Dolls (1967)
Three young women in show business cheat on their partners in one way or another.
Fever (1991) – Marcia Gay Harden
Ray gets out of prison and wants to get back with Lacy but she is already married. He informs Lacy’s husband that he’ll be seeing her in the next days to try to win her back. Of course, Lacy’s husband is pissed. Ray scores a bit when Lacy makes out with him.
Old School (2003)
A husband comes home and catches his wife about to have a threesome with a blindfolded couple.
Let’s Go To Rose Motel 3 – Wandering (2014)
A girl gets revenge on both her cheating boyfriend and her sister’s cheating boyfriend at the same time by coming with her sister’s boyfriend to a motel and leaving him hanging when they are about to screw.
American Reunion (2012)
An ex-couple rekindles their feelings for each other during their high school reunion, to the chagrin of their current partners. Plus, a girl just turns 18 and she wants her former male babysitter whom she had a crush on to devirginize her instead of her boyfriend.
Jarhead (2005)
A wife records herself screwing the neighbor and sends the tape to her husband who is a soldier stationed in Iraq. Her husband thinks it’s just a regular movie so he lets the whole troops watch.
Young Mother 2 (2014)
Because of a Pandora’s Box, Yeong-gil is experiencing either a recurring day or recurring dreams and he has no idea which of them are real and when they will end. In one of these days (or dreams), he gets to bang the mom of Joo-yeon, a girl who hires him to pretend as her boyfriend.