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Movies like Lovers Lovers (1994)

A man at a party discovers a woman on the floor eating from the fridge. After a brief sexual encounter the man thinks he will never see her again. That is until he finds her eating from the fridge at his house, which he shares with his girlfriend. Soon an affair develops. Meanwhile the audience learns that the girlfriend is having an affair with the fridge girl's boyfriend. The plot follows the couples as they narrowly miss discovering what's going on.