"And that he is doing things with OW that he always refused to do with me"
This was definitely true for me as well and it hurt a lot. It would have made a real difference to our marriage if he had been willing to do those things with me.
Although I think you have other advice here, I just wanted to acknowledge that I understand how you feel.
M: 16 years Bomb 4/07 OW 20s long gone Divorced 11/09 I remarried New Guy Cooperative r w/X regarding D