I have masturbated in this way next to the sleeping bodies of all my serious, committed partners who came before my husband. In some cases, as expected, it was because I wanted more sex than they could give me. I’ve been called “insatiable” and “demanding” one too many times. But this has not always been the story. Yes, I have an incredibly high sex drive, but even in relationships where I have great sex multiple times a week my nighttime stealth for self-pleasure has persisted.