Most every male escort I know is bisexual. The money in male escorting is not from women...it's from gay men. "Hung" is far from an accurate representation of male escorting...FAR from it! That is a fact. There are few and far between who don't do some kind of swinging even if it's with another provider and her clients.
If I were a guy, of course I would have a problem if my woman was cheating because I know that when women cheat it is normally for emotional reasons which is far more serious than the "Only sex" that men cheat for.