Polyamory. My husband has always wanted to try swinging, and I have always had a hunch it was because he was unfaithful to me and he wants me to even the score. I'm not sure, but that's my hunch. Yes, I always play the game with him in bed (you know the game), agree with his fantasy, and make the sex hot. "Oh yes, baby, let your buddy fuck me hard and make me a whore," makes him extra hot, thinking another guy is in his wife's pussy (makes me hot too), ...