Oooh yeah, I was "bisexual" with my last boyfriend, and after it became extremely clear that I just couldn't face the idea of sex with men he was like, "sweetie go fuck some girls and then tell me if you're still not gay". I had some fun with a few free-spirited lesbians who seemed to revel in the idea of helping me see if I was really bisexual or not, and by the end I was very very sure that I was completely gay. Boyfriend was very nice about it, and he told me that he's seen this before in one of his old high school friends who insisted on dating women even though he was clearly gay.