His wife is preggo for most of the time. Which probably means she can't have sex all of the time. Even assuming she would agree to have the type of sex he wants.
I had extreme morning sickness from the very beginning of pregnancy to the very end. I could hardly breathe without vomiting. In and out of the hospital, all that jazz. You know what never crossed his mind? Cheating. You know what did? Waiting until I felt physically able to and had the desire to. That's the deal you make when you get married.