"He says he does not even know anymore what commitment is."
That's a cop out answer from your H. All part of the fog right now. Commitment is you stay with your spouse. Period. Through thick and thin.
He's got a choice. Stick with you or not. It's not that he's "confused" about what commitment is. It's that he doesn't know if he wants to be commited to YOU and not someone else.
Maybe these feelings for the OW threw him for a loop. But that's only natural when you're attracted to someone. The rush of new love is like a drug. He's like an addict coming down from a high and once you take it away, all he can see is negative.
You continue to DB because you need it for yourself. Continue to GAL and you'll shift back into being the woman he fell in love with.
M-43 W-40 2D - 9 and 5
Emotion, yet peace. Ignorance, yet knowledge. Passion, yet serenity. Chaos, yet harmony. Death, yet a new life.