Painter, I was reading on another marriage website that anyone is capable of cheating and that it is often just a matter of opportunity.
I don't necessarily believe that, as I had opportunities to cheat in past and made sure to disengage very early. I have opportunities to do so now (and I don't even think it would technically be considered cheating since husband left ) but still have shut it down. Most of my friends and girls I go out with have cheated and it still never Influenced me. No one in my family has been up unfaithful though, so that might be why. Maybe it's more related to family? I really don't believe that everyone is capable of cheating. I would bet my life that one of my brothers would never ever cheat as well.
What you describe with your husbands lack of communication is similar to my experience as well. My husband now says he compromised his happiness throughout the entire relationship!
