How do I build confidence?

Ok this is my take on it. you have nothing to lose by going up to a guy and just talking to him. WE DO NOT MIND THAT AT ALLL. If the guy likes you he will probably come up to you next time but if they don't there is nothing wrong with still talking to him and showing him that your a good friend. Believe me I don't always know why but when your surrounded by good looking people it makes you feel better looking. At least with me it does.

But you have nothing to lose really. guys unless they are complete jerks won't be mean if they don't like you but you just talk to them they will talk back to you. Guys aren't mean to girls in general and if they are then you shouldn't go out with them anyways

Well, sweetie, first off you're young. And I'm sure many men will think you're attractive, especially in college -- but be careful at the same time. College men aren't, um, well they're more "wild" that most of the guys you knew from high school. Why don't you think you're beautiful? I'm going to take a chance here and throw out the "G" word, but God created everybody (men & Women) from his likeness -- Trust me, you're beautiful!

Second, have you talked to anyone about having these feelings of being alone? The older you get, you'll see being alone isn't such a bad thing! =) Trust me! In the mean time, you can surround yourself with your best friends/family and all of the things you like to do. When you're ready to take that "Chance" you'll know and you'll probably do it involuntarily. You're not alone because something is wrong with you! =) Everybody makes their own choices -- it sounds to me like your had your priorities straight!

Oooh and one piece of advice for feeling better about yourself -- Surround yourself with POSITIVE people! It makes a world of difference! Hope this helps!