20 year old virgin...? Eh?

I'm twenty, and I just finished my sophomore year of college. I'm still a virgin... is this a turn off to guys? I'm the only virgin in my group of close friends. Some of them tease me about it, while others think it's a good thing and that I should wait until I find "the one." Although I want to wait, I feel out of the loop and people feel like they can't talk about their sex stories in front of me, as if I'm some KID! But really, come on, I'm twenty. I've heard it before. I just haven't experienced it yet.