Actually, Dennis has made it very clear many times that he thinks a good woman's consistent presence in their life has a civilizing and domesticating effect on men.
I think he is right.
I never got the sense his first marriage broke up because he cheated. Where did that come from?
Oh, just because he has done so many shows about infidelity or men's sex drive. He even made that movie about it (I saw it in the synagogue when he showed it at a talk he gave). It showed scenarios about how difficult it is for men to turn down flirtatious offers... I can't remember the whole deal.