hey, thanks everyone! it makes me feel better to know there are others.
I wanted to clarify, my therapist says this is normal for someone with bipolar disorder. she thinks it's a big deal...actually, she suggested I should get treatment as a sex addict. I don't like that idea because it makes it seem like I'm always this way...but I'm not.
Also, I have this friend who might be a "trigger" for these kinds of obsessions...but does mania really have "triggers"?