[Handsome Creepy Eel]

I know a girl that loves me scratching her on the back (both during sex and in general) and claims it gives her great pleasure. It's a miracle how much scratching she can take without any consequences to her skin. She doesn't do the same to me (especially during sex) because she knows my back isn't that tough.

My theory is that most girls have some sort of sado/mazochistic streak in them that they only let out with the right person.