How does it feel for a man if his wife or long-term girlfriend leaves him for another woman? How did you cope with that? Any advice?

IF IM THE MAN: That's freakin insulting but I'll just think that my ex is much happier to eat a bone over a KFC drumstick. Its not me. It's her taste.

Thanks.
To clarify, I'm looking for someone who has actually been through this.