We all made mistakes. MR is a two way street. Stop blaming yourself for it all. He made the decision to cheat. You didn't force his hand. He did that.
I know I screwed up a few things too (not really that much), but I never made my W go have sex with another man. She did that completely on her own just like your WH did that on his own.
Yes, some people do get remarried after divorce. If you two do that, remember that it will have to be like a completely different relationship.
Is it too late for LRT to make a difference? Maybe it is. I started LRT in the middle of the second week and I'm still getting a D. I've been LRT/GAL/180 for 2 months, and it has not made a change in my WW's behavior. I just had to learn to accept that D is part of my life now. You will learn to accept it too, if it happens.
Stop blaming yourself for it all. Go read my threads. I had the same thoughts. Read what AH, Vanilla, Surfer, Sandi, the Joes, and everyone else told me when I was in a similar place. I think it was in my 3rd or 4th thread when I was taking responsibility for making my W into WW.
It simply isn't all your fault, so stop beating yourself up about it.
Nicole... It may be too late to save your MR. That's a realistic possibility. But it's not too late for Nicole to become the best Nicole, the best mother, and the best person that she can be.
I am trying to learn this too... Our marriages are not our lives. Our lives can INCLUDE marriage, but they don't HAVE to. It has been hard for me to put this into action within my life lately, but I am doing my best and so will you.
Save yourself. Nobody is coming! BD:11/2017 Filed:12/2017 Final: 2/2018