I am usually straight too, but occasionally I sleep with women, but usually that is 3 people, with a guy too. Hypomania can make me more interested in that, because I'll be more interested in sex in general, but I don't have to be hypomanic to be adventurous. Personally, I think sexual orientation is on a continuum, not just gay or straight. It's a matter of degrees. I consider myself bisexual, but much more into men.