I am sorry about the latest development in your situation. Can I ask a question? Is it possible that he "strayed" while he was gone? Maybe not with the OW but with a woman during his trip? I'm just wondering if the guilt of it is what is causing his stress.
I used to work with a guy who would get a hooker in each city he travelled to and when he got home he and he wife would fight because he was so guilty with the indiscretion. Eventually he went to therapy. I don't know if this is anything your husband might have going on, but just a thought. It just seems like a big change in his behavoir.
