I could see that coming. But how old are you now? 17? You have 13 years until then! Thats almost twice your life time! Think of what will have changed in 3 years (when you're 20) You will have more friends and more connections (especially if you get a job)!
I have a personality that screams GO SAY HI! But I don't want to BECAUSE I studder too sometimes, and yes I am partially anti social to those I'm not close too..
Think of your one relationship, you were too shy to even meet him! I have no problem about dating online, but you have to try to stick with one, the more there are, the harder it gets!
But like I said, once you get out there, at least to a job, you will HAVE to talk to people, and you will realize its not so bad. I've experienced this for myself this year! Its true.