How do I connect deeper with people.?

I consider myself to have a decent number of friends, but I don't have any really good friends. Nobody considers me to be their "best-friend" even if I consider them to be mine. For example, I go to boarding school, and the guy that I consider to be my best friend from home does not answer any form of communication from me. I try texting, calling and Facebook, but he doesn't respond. He responds to everybody else but not me. At school, I feel like I'm not the end. People don't want to hang out with me, they only want to be with me until someone better comes along and they can hang out with that person. I am just a momentary distraction from boredom until a real friend comes along. And this is everyone, not just one or two people, everyone does this to me, and I don't understand why. I'm a nice guy that wants to be with people, I don't hide in my room or whatever, I really try to connect but nobody ever wants to return the favor. I can't get any girls, and I get hurt really easily because it happens so many times. I just want to know how to connect deeper with people, so they do want to be with me, because right now this is not fair.