Sugar Mountain (2016)
2016Two brothers fake the disappearance of the older brother in the Alaskan mountains so that they can sell his survival story. While the older brother is up in the mountains, his girlfriend and the younger brother have sex.
Cheating Girlfriend
Katawan mo… langit ko (Kamandag ni Margarita) (2002)
2002A chick (who has a boyfriend) makes out with a fisherman after he saves her from killing herself. They have full-on sex later after her boyfriend has died.
Lovestruck: The Revenge of Laura Gil (1996) aka Mille désirs
1996About a female author with writer’s block, who’s pressured by her publisher husband to write more. She contacts one of her female fans, who also wants to be a writer. She ends up having sex with the fan’s boyfriend, and her husband, with the fan.
Devil Face, Angel Heart (2002)
2002A gang boss’ girlfriend cheats on him with his right hand man, and then cheats on the right hand man with a bodyguard who is previously an assassin with a deformed face.
Waves (2015)
2015Ross and Sofia, old friends who are passionately in love with each other, meet to spend a few days together on an island resort. Sofia has a boyfriend.
The Sister Next Door (2016)
2016A horny teenager peeps at his female neighbor and records her lovemaking with her boyfriend. He later uses the videos to blackmail her, so she is fo...d to have sex with him while she is having phone sex with her boyfriend.
Threesome (TV Series) (2021)
2021A couple has a threesome with a chick. The girlfriend gets jealous of the chick and makes a preemptive strike by cheating ahead of his boyfriend with a black dude.
Fire Under the Skin (1985)
1985A college k..d on the path of revenge spends the summer at his wealthy friend’s country mansion and bangs the females in his friend’s household, including his mom, his sister, and his girlfriend.
The Lost Door (2008)
2008Kristina falls for Nicole and enlists the help of a pseudo-intellectual asshole to seduce her so that she and her boyfriend will break up.
Halimuyak ng babae (1996) aka Scent of a Woman
1996A rich man wins a young woman in a countryside bull-riding contest, making her his woman, and takes her to the big city. Her countryside boyfriend comes for her, they make love and go back to their hometown. The scorned rich man buys the ranch where they work and seduces the young woman again.