Okay, actually, now that I've thought about it a little more (because what better do I have to do while I'm at work, lol) I guess that, while it would suck either way, I could feel a tiny bit better if he cheated with a man. I mean, if man is what he wants, I certainly couldn't give it to him, you know?
Either way, I'd dump his azz. Not that it would ever happen.