Amazon Women on the Moon (1987)
The President’s wife has a past that comes back to haunt her. Plus, a viewer rents an interactive video where he fucks another guy’s wife and gets caught.
Dona Flor and Her Two Husbands (1976)
A wife cheats with the spirit of her dead ex-husband.
Finders Keepers, Lovers Weepers! (1968)
The wife of a bar owner cheats with the bartender while the bar is being robbed.
Plush (2013)
A young married vocalist of a band (Emily Browning) is cheating with her guitarist, who as it turns out is a murderous, delusional psychopath.