Originally Posted by
samlad
Well, as upset as the guy with the girlfriend will be, it should give him some peace of mind to know that a) she isn't going to be the long-term, faithful type and b) he isn't much of a friend after all. Rather than beating up the bloke, he should just leave them to it and have each other. They may be happy in the short-term, but from my experience of cheaters, if they do it with you, they will do it to you, so chances are one will fuck the other over too.