There is an article about this on bphope, talking about how hypersexuality is one of the least talked about symptoms of bipolarity. Including juvenile hypersexuality, something people don't like to think about. If you have ever read His Bright Light by Danielle Steele about her son Nick Traina, you see even in young kids it exists.

Obviously cheating on a spouse or SO is a painful subject. My husband was able to see that it was not the ME he knew that had an emotional affair, there was so much more going on than just that, it was the whole list of manic behaviors. I was not myself.

This is one place I really don't understand judgemental statements. This is supposed to be for support.