The Other Woman (1981)

Aunt Barbara is hosting her young teen nephew Marco who has come to spend time at his uncle Mario's mansion in the Italian countryside away from his overly strict and puritanical mother. Unfortunately or fortunately for Marco his uncle has to go to New York on a business trip. Marco is left in the care of his slutty aunt. It does not take long for him to lust after his seductive aunt who plays a hard-to-get game with him. Then there is also the lusty nymph maid, Alice who is more than willing to explore with Marco the sensual pleasures of the flesh. However the lustful Marco begins to fall in love with his aunt who gives in to him during one of the sex parties she has in the house. Soon aunt and nephew become passionate lovers.