"Well, let's just say it appears he is happy when he is with someone besides his wife, and someone who is a different 'gender' than his wife.""Doesn't this describe all heterosexual men after their first few years of marriage?"
OMG, I certainly hope not! MOST men do not turn to homosexuality, after the first few years of marriage - at least I don't think so.
Are you serious? (Or just being a silly guy?)
Guess I'm kinda naive on that stuff. Most of the men I have known (even with bad marriages), would never even consider resorting to 'that' after a few years of marriage!