Bipolar disorder is well known for increasing risk-taking behaviour, particularly during a "manic" period, so that could explain your high sex drive. The fact that you crave excitement and yet want to feel calm makes me think that you need to pacify yourself for some reason. The sex seems like an escape for you, yet you'd rather be sexless. Do you not feel in control of your urges? Does it make you feel guilty? Maybe you could discuss that more with your T?

I'm not bipolar but suffer from depression and strangely enough, at my most depressed state, my sex drive is sky high (even though I've never been sexually active) almost to the point of feeling unbearable. I always thought that your sex drive diminished when you are depressed.