It might be pride. It might be that he's unable to verbalize much...my XAH was that way, "Strong silent type" is a real thing...it's just impossible to communicate with.
It might also be power. My ex was not going to give an inch because our relationship was based on him being the one in charge and me going along with it or else. Although he sent me a drunk letter or two.
In the end, we were far, far better off apart. He is now remarried...to a marriage counselor.
Talk about taking your work home with you...
Sending you a hug.