Wait for him? for what? for him to dump you and go and marry someone else 'cause I'm sure you're not his only "side dish" and that's IF he ever divorces his wife and all you'll have is just memories of wasting your time with him.you've been with him too long already,end it now cause you can't really call it a relationship it's point blank cheating and it's not fair to his wife you two may think you're being discreet but trust me she has to know it's been six years for crying out loud, have some dignity and CUT THAT CORD and the healing will follow, try to put yourself in his wife's shoes how would feel to know you husband is out with somebody else after he committed himself to you in holy matrimony? one final thought do you want to be know as the " home wrecker"?