The Border Post (2006) aka Karaula
A soldier doctor is tasked by his lieutenant to visit his wife, which leads to an affair between the two.
The Unnaturals (1969)
A closeted lesbian wife has sex with another wife and has unfinished sex with a rich old man’s girlfriend. The girlfriend is also cheating with her boyfriend’s new male administrator.
Hausfrauen-Report 4 (1973) aka The Sensuous Housewife
What attractive German housewives do when their career-minded husbands leave the house for a long day at the office.
Koichiro Uno’s Wet and Riding (1982)
Yoko is a housewife who’s frustrated by her husband’s lack of virility. She finds solace in erotic daydreams, the ministrations of a condom salesman, a threesome with her friend and her dentist husband, the attention of her husband’s virginal brother, and, eventually, the partner-swapping lifestyle.
The Harrow (2016)
A reclusive man gets a visitor who turns out to be the daughter of a woman from his past. The woman was the wife of the man he worked for and after trying to seduce her she gave in quickly and they had an affair.
The Stalker (2000) aka The Seduction of Maxine
An up-and-coming sexy film star who has a cheating boyfriend begins an affair with her new bodyguard and also has lesbian sex with her friend.
Excitement Class: Love Techniques (1972)
A student wants to screw his gym teacher and plans all sorts of things to make her hate her fiance. Will he succeed?
The Human Contract (2008)
A guy meets a hot Latina in a bar and begins an affair with her. Is she cheating on someone?
Love for Sale (2017)
A reporter for a major newspaper who has a past as an adult video star cheats on her musician boyfriend several times.
Restraint (2008)
A young couple on the run hole up in a country estate with a hostage in tow. A love triangle materializes between the three.