Good for you , but proceed cautiously. Your husband will have to go through his grieving process over the end of the affair. It is natural and something he will have to go through. I will also warn you the OW will go through the same thing....so she may pop up again.
This happened in my situation. About six months in to me knowing of the affair, my wife and I were getting close again and my wife broke things off with the OP. I ended up taking my kids on an already planned vacation with my parents for a week. While we were away (during which my wife called everyday)the OP swooped back in. Of course when I arrived home to find week old dishes and food in the frig....I knew what had happened. Thank to this board I was prepared for it, but we ended up stepping back from being friends to barely talking again.