Rushmore (1999)

IMDB: 7.6/10

A teenager at Rushmore Academy falls for a much older teacher and befriends a middle-aged industrialist. Later, he finds out that his love interest and his friend are having an affair, which prompts him to begin a vendetta.

Sex, Lies, and Videotape (1989)

IMDB: 7.2/10

A sexually repressed woman's husband is having an affair with her sister. The arrival of a visitor with a rather unusual fetish changes everything.