mexican simpoff

A straight relationship in which there is still a constantly changing, third male party, in which a triangular relationship is mocked at the expense of the male partner who cannot separate due to emotional dependence on his female partner, even if it bothers him. Be it consciously or unconsciously.

A:"Hey man I love her and I know that she loves me too. Why do you think our partnership lasts so long, but not with the other guys with whom she tries anyway?"
B:"Because you're stuck in a mexican simpoff! She has the fun of her life with other guys while telling you about love and loyalty. This is cheating with extra steps!"