How about this example.
You walk up to a friend and say the following.
"Hey, your a great guy. Matter of fact I think you are much smarter than me, have a better job, live in a nicer home, posess outstanding witt and charm and would be a catch for any woman anywhere in America. That said, I asked your girlfriend out last night. She accepted. Hey, look on the bright side. You are a really great person and I am sure you will find someone else. Besides, you dated this girl for a whole (insert time frame here). Focus on that.
"Good luck in finding another girlfriend. We are all rooting for you."
How would that wash?