If he came back, how would your marriage be different? How would you be different?
If my H came back and I really do hope he comes back, I would first start by giving him confidance in himself. He said that what he did wasn't acknowledge and wasn't enough. I would let he know that he is more than enough, he is perfert for me. I would listen to him more and not always focus on my needs. I would stop being mad at the little stuff. I would give him more affection and not push him away when he initiate physical intimacy.
That's what I can think of right now, I know I have other things to work on.
The problem now is to get him to talk to me and to not hold a grudge againt me. That is where I need help.