The way I see it, there's a lot of pressure on ya. Everyone else dating already? Happened to me, too, back when I was in school. It's just not the time for all people at that point in life. Eventually you'll just kinda start meeting people and hitting up chicks. A part of the reason why some dudes don't really date at that age is the fact that some of us (like me) look absolutely hideous at that age. Acne, fat, glasses, braces, you name it. Not saying I had braces or nuttin', though....
Aaaanyways, where was I? Right! What I ment to say was that you shouldn't worry about it. That isn't to say you should make no effort to meet new people and shit.
Me, personally, when I was in school, particularly grades 7 through 9 (the time it seemed to me most people began dating and had their first sexual experiences) I looked like an ugly mutherfucker. Gained some weight, had a lot of zits on my face and I had just gotten glasses a few years earlier. Wasn't exactly popular with people, not to mention the ladies.
Then I got into trade school. I had lost most of my excess weight, the zits were gone and I started going to the gym a little. I also made my first really good friends there. You know, the friends that'll stick by you for life. I started coming out of my shell a little, and I began to truly enjoy life. This in turn boosted my ego, which is the number one thing when attracting ladies. Nobody likes a sorry ass loser.
So anyways, while in trade school I eventually met my missus. We're still seeing eachother now, even after I went for a year of military service. Which brings me to my second point. Chicks dig military men. Aaaaww yeah! To all you ladies out there, if you agree, aaawww yeah, and if you disagree, well, I'm not really all that serious about everyone liking military men.
Well, enough ranting. Bottom line, stop worrying and learn some people skills. Go out and enjoy life. It's not worth really worrying about.