I can relate to hypersexuality being something I struggle with as part of my symptoms of Bipolar I. When I get hypomanic (or manic), I won't think through decisions and end up making risky decisions without thinking them through, and the need for sex is very high. I focus on it too much when I get like that and during inappropriate times during the day.

Also, I often end up not using protection since my impulse control is so bad at that point, and I regret it terribly. I would definitely recommend therapy, and it's something that I need to do for myself soon (since I took a break from it and have only been seeing the Psychiatrist). Mine tends to come and go, depending on what kind of episode it is. Either way, exploring more in therapy as to what else can be behind the Bipolar and why the need is something that has to fulfilled might help you gain the insight. Is it filling a void, perhaps? A lot to think about. Hope that helps a little.