I've been trying to get caught up on your situation, and I'm not sure what your end goal is right now.
Are you trying to reconcile with your husband? Or are you just tearing each other up until one or the other decides to file for D?
If you are trying to reconcile, you need to get a handle on your emotions. Yelling at him and beating him up will get you exactly nowhere. You are projecting a state of anger and insecurity and resentment -- and those are not things that will bring him back.
If he does have a drinking problem, then that introduces extra challenges. There are all sorts of programs for spouses/relatives/children of alcoholics; that would be a good place to start.
What about the OW? How much concrete proof do you have? Because it looks like if you don't have something concrete by now, you'll never get it because he and the OW will push their relationship underground.
Of course, if you believe you are beyond reconciliation at this point, then you should consider filing for D yourself.
Me: 44, Wife: 39 M: 17 years T: 20 years Bomb on 08/25/09 1/13/10: MC started 1/28/10, 2/8/10: More bombs 8/28/10: Wife moved out No talk of D, no movement