cake eater
one who carries on at least one adulterous to his or her primary relationship with no plans to end either relationship; from the expression "to have one's cake and eat it, too" referring to someone wanting to have something both ways
Jane is being such a cake eater, but sooner or later she's going to slip up and get dumped by both of her lovers.
cake eater by somervillain April 28, 2008
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