@CaribenxMarciaX I did this once, was the party with which they cheated on their then partner. It was a weird case. We'd had sexual tension for a long time, she was visiting my area, and also, he had recently cheated AND then made an excuse for it that was bizarre and racist. (She was black and he cheated with white girls, claimed he "missed their whiteness"(????!!!!)) It ended up never being that messy, probably because of the distance stuff involved. In retrospect, the higher self reasons I'd have for not doing it have less to do with the aiding-and-abetting cheating part and more to do with how I personally wasn't and never have been great at casual sex stuff.