Hmmmm, the last year of my marriage there was no sex, neither one of us wanted it, and I had plenty of opportunities for some good looking gym strange; I didn't even flirt let alone cheat so I guess that means I must not be hot. Hell, I can't even stand to casually date two women at the time, too much work.
I will say that my really really good looking friends that can get almost any girl based on their looks never have a relationship longer than a month. They don't cheat in that time period but just toss her to the side and move onto the next hot piece of ass and they get plenty of it without even trying. Conclusion, women are retarded.