I've mentioned it before on this site, my ex was one of the well-known sluts in her high school. What's more, she was a gymnast, and from my experience her and other gymnasts she knew valued their rare free time highly, and she used it for sex. It was the way she burned off all that excess energy. We met when she was 19, she was in college, and our mothers were best friends back then. I'm much older than her, and both our mothers thought an older man would be good to help her settle down, so they set us up on a blind date. It was love at first sight, as she was petite, young, and pretty, and was giving me a handjob in the movie theater 15 minutes in. We had a relatively normal dinner, but when I brought her back to my apartment we had sex off and on until the early morning. In those days we were hungry for each other, but in hindsight I should have realized she would have the inclination to cheat on me. After I met her older sister and found out more about her that she never told me herself, I definitely should have known, but I was mesmerized by the pussy. After at least three affairs and years later, I'd learned my lesson.
What's ironic is that she was rather vanilla in the bedroom. If she'd been less of a hypocrite and more open-minded about sex, maybe we could have had an open relationship or discovered cuckolding together, but she has issues with being honest about her life. We've had three friends-with-benefits nights since we split, so you can see she doesn't hold me in disdain enough to take a pass on me, but I think it's just her slut nature to find it appealing to occasionally have sex with her ex husband.