The only thing I can do is stop giving a sh*t what he says.
It helps just thinking about the mind games (per your last post about your W). My H left once before, blamed it all on me, promised there was no one else...then it came out that there was someone else who he had met prior to leaving (so he left to cheat basically). He tried "but we were separated" and eventually came the mea culpas and the apologies and the "what was I thinking?" and the "I was such an a**hole" and blah blah blah. And now, here we are 6 years later. Mind you our R was hellish in many ways but the behavior that has emerged this time is exactly the same as last time (and me, the brain surgeon falls for it AGAIN).
I don't know why I am listening to any of this sh*t. I suppose I want to gain some insight about myself but by now, he should have little to do with that. He isn't teaching me anything constructive. And, the one thing I want to change most about myself is my reactivity so here's the ultimate opportunity. Maybe I couldn't do it within the M because it was too challenging but I could possibly grow exponentially by doing it now.
