Mine initially cut off all initimacy too right after BD. I went from a husband with an OK sex life, to a friend! We were marriend 16 years and man, it just makes no sense. We havent had a single marital counseling session.
Mine has yet to admit to a PA, but I have strong suspicions that's going on too. I loved the statements on two train wrecks coming together. Limerence doesn't last and what they have together has no foundation.
I've learned so much about the man and husband I want to be going forward. Sounds like you have too!