The April Fools (1969)
A guy meets his boss’ wife in a party and she leaves with him for a drink.
no sex and nudity
City of Glass (1998) – Shu Qi
A wife resumes her love affair with a former lover from college.
A Guide for the Married Woman (1978)
A bored housewife contemplates having an affair. Her cheating, married friends approve.
Dial M for Murder (1954) – Alfred Hitchcock
A husband plans a perfect murder for his cheating wife.
Strangers on a Train (1951) – Alfred Hitchcock
A slutty wife doesn’t want to divorce her cuckolded husband anymore because he has gotten successful in his career.