I'm straight, but sometimes I've been curious about sex with a girl, but I could never imagine myself being in a real relationship with a girl, so I don't think that makes me a lesbian or even bisexual. Lately, though, I've become really close to a female friend that I also know has been curious about being with a girl sexually as well. I guess, since we've gotten closer I've developed a crush on her, though.. like a real crush that I would get on a guy. I can picture being with her sexually and romantically. I don't know what this means.. I am not about to tell her or anything, because that could really make things awkward and ruin our friendship, but I'm just very confused about it. I don't know.. is this normal or what can I do about it?