Hey, unfortunately I can't give you any advice on the matter but I just wanted to let you know you're not the only one haha
Despite being a girl my situation is pretty similar, the only thing is that I'm probably one year younger than you, but it doesn't make much difference I guess. I do have both female and male friends, but I don't like clubbing, going to the disco and such, and I'm rather shy when I get to know new people, although it changes after a while. But yeah, same, I've never kissed anyone nor been in a relationship, and to be honest, if that were to happen, I wouldn't really know what to do or think, and I believe this is what is holding me back. It's much easier to leave things the way they are, even though it might not be the most appropriate choice.
For example, there's this guy I've seen a couple of times at parties because we have friends in common, and even though I obviously never talked to him, he does seem like an interesting type, kinda different from the average and surely attractive in a way. Having said this, my friend knows him and they hang out sometimes, she told me he's never been in a relationship either because he doesn't think he's ready, and this could eventually go to my advantage; but I really have no idea what to do, how to behave and I'm 100% I'd be super awkward.
Sorry about the rant but this was to say, if you get the hang of the situation, do let me know eventually haha!