Good luck Purg. You got a lot of great advice. I was going to say just about the same as everyone else. Keep the talk simple. If he wants to go back and forth, have him talk to your L. That's why you have a L. Continue what you're doing. Maintaining your serenity. Don't engage in his defensive talk.
Thinking of you...
M 42 H 39 T10 (-2yrs separation) S8 D5 DD 7/30/11 (EA&PA) Reconciled 6/2013 Separation in works 1/2017