Hi Micci!
I'm so sorry about what you're dealing with on top of trying to have your WLS. I too was cheated on, but the second I found out, he was GONE FOR GOOD and I never looked back. Dr Phil (I love him) says we teach people how to treat us. Don't let him treat you less than you deserve for even one second longer. I think you should go forward with your WLS WITHOUT his help, even though you may desperately need it...once you let him back in, it will be harder to let him go again. Plus, how strong will you feel knowing you went thru this on your own?! The other good side is, by concentrating on your WLS, you won't have time to play the "what if" game about your relationship. Trust me, after the surgery, you're going to wonder why you wasted so much time and emotion on him to begin with! As for your kids, you're setting a much better example by taking care of yourself rather than letting someone treat you badly!
Sorry for the long post, but this hit close to home for me! Good luck to you, and let us know how you're doing...STAY STRONG!!
IT'S A GOOD LIFE!