Il saprofita (1974) aka The Profiteer
A baron’s wife has sex with his crippled son’s seminarian caretaker.
Bastaard (2019)
A young delinquent, taken in by a family, feels the wife’s breasts in front of her son to display dominance.
Frog Song (2005)
A wife catches her husband cheating on her. She walks out on him and moves in with a female would-be manga artist who is working as a part-time prostitute. She gets involved in her prostituting but eventually, she comes back to her husband and bears two sons with him.
Between Summer and Fall (2018) aka Zwischen Sommer und Herbst
A 17-year- old girl falls in love with her older brother’s new girlfriend.
Training a Snob (2020)
An unemployed man who lives off his wife’s earnings soon falls head over heels for his rude and haughty sister-in-law who has a boyfriend.
Diary of Seduction (2002)
A former high-class call girl turned wife-of-businessman/politician visits the brothel she formerly worked at to research for her tell-all book as a hooker. There, she gets encouraged to have a threesome with a former male client for old time’s sake.
Soft Skin (1998)
A wife decides to spice up her life by finding a young lover and running off with him by faking her kidnapping.
Naughty Léa (2001)
A foxy babe leads two couples into swinging but has the intention of wreaking havoc in their relationships.
Júlia ist (2017)
A Spanish chick goes to Berlin to study and cheats on her boyfriend with a classmate.
Voodoo Passion (1977)
A wife cheats on her husband while under hypnosis, and also while not.