I read your post about WAW vs WAH ML to LBS. It's possible that it could be a power play for some, but I don't think it's the rule. Just my own opinion, but a cheating W is the last stop on the desire train. From my interaction with OM experiencing my situation, it's a deal breaker. It's more desirable to ML to a stranger, then a former "trusted" partner who's strayed.
I think most Men are less forgiving then their Female counterparts.
"It is curious that physical courage should be so common in the world and moral courage so rare." -Mark Twain