Maybe they think you're homosexual. Just don't throw yourself at people or try to force friendships. It make them a bit wary of you and make you look like a desperato. Just hang in there....friendship can sometimes sneak up behind you and nip you in the butt before you know it. Just start by saying'hey'or making small talk which can grown into a whole conversation and before you know it you'll be aquaintances with them and then friends. It will take time. Try places outside of college, too! Good luck =]*Be yourself - Corny as it sounds, it's the best piece of advice anybody can give you*