One explanation for someone who is bipolar. Hypomania can express as hypersexual.

My wife and past girlfriends have experienced this with me and to be honest it’s fun for the first hour but having a throbbing boner and inability to satisfy the urge stops being fun for both parties involved. Also makes woman feel horribly inadequate that they can’t get a man to cum. Add to it I try to do all sorts of uncomfortable things to us both to just nut.

I’m sure that the bipolar woman go through what I have gone through it’s like eating nonstop and still being hungry even though your stomach is about to burst. You feel like a disgusting slob with every bite but can’t put the food down. All you crave is the sloppiest and nastiest food because anything healthy just doesn’t get you there. The regret afterwards is next level.

Not trying to be a downer, but you did ask.