My H was cheated on at least twice before. He said he moved on very quickly and didn't dwell on it or ask for any details. He's 'good' at stuffing emotions.
I hope you have a calm conversation with him... Maybe remove yourself for a while if you feel overwhelmed or need to think about something...
There's nothing anyone can say to make this better. Just hold on to boundaries while leaving the door open for him to make changes? Listening and staying calm, making my own changes and working on myself. That's what I've tried to do so far. Slip & fall, get back up on my feet again.
M 16 yrs, WH62, P54 3 adult blended kids EA 11/13, BD1 6/14 PA fall 14, BD2 2/15 Piecing 2015, BD3 12/15 Separated 4/16 WH moved OW in 5/16 Divorced 6/15/17