Marriage is tough enough and one based on lies can't be a happy one. All lies come out at some point because eventually you can't cover up everything. Add to that the dismal 2nd marriage stats and he is facing an uphill battle.
I just hope your x understands that if he doesn't start listening to his kids he is going to lose them. He may always be their Dad but that's it. I have seen that with my neighbor. My neighbor had to "push" her daughter to spend time with her Dad because I think she thought that was the right thing to do and she wanted her daughter to have a Dad. Now that her daughter is older she wants nothing to do with him.
Someday you will be ready to move on and i believe your kids will be happy for you because you put them first. They may never accept his new family. I think that is why I am trying so hard to work this out. I even told my H that. I'm not sure yet how much to believe with OW, but I do know that I have to keep trying. After hearing about your kids and how mine reacted, I can't give up yet. I wish you would have found this site earlier. It has helped me tremendously.
M 48 H 50 M 25 T 27 D 20,18,15 6/11 H filed 3/12 H dropped 4/12 H moved out