I think at the very least - do nothing - and at the very most, send what Starsky suggests:

"I'm sorry you feel that way. Everything I've done, I've done to try to save our marriage. I stand by my actions."

Become a man of few words, GAL, and let your W and OM live with what just happened.

T 13 M 7
Me 48 H 46
SS 15
BD 7.14 PA
D final 5.16 (H filed)

We receive & we lose, and must try to achieve gratitude & embrace with whole hearts whatever of life that remains after the losses - Dubus