yea. in fact, my first sexual experience was with a guy (when I was 25) and up to that stage, I knew I liked guys more that girls but didn't know why - assumed I was gay or whatever. but, when I had sex for the first time, I was freaked the fuck out. like, I didn't enjoy it at all. I blacked out part of what happened and after ward was filled with regret, disgust, anything you can imagine. and the dude was hot, in fact famous in the country I was living at the time, so it should have been the perfect first time but it made me not want sex again for another year. anyway, I returned to the US and when I started working immediately met my fiance, and I figured 'there you have it, I'm not gay.' it was about 3 years later when I decided after we broke up and I moved away that I might try to explore guys on my terms, and this time it was more enjoyable - but, I still always got turned on by women and the need to see women in porn (gay porn just doesn't do it for me). so I started to explore 3somes and more open minded scenarios. even now, I rarely meet men 1:1 and if I do, rarely does it end up with sex, and I consider myself bi, with preferences changing from time to time.