I Have HUGE Relationship Problems And I Don't Know Why!?!?!?

I think you need time by yourself to sort out things. Not just about relationships and guys but with yourself. I would suggest just telling him nicely that you would like to be friends. Dating will always be there, you're young. Don't tell him you're scared and what not. Obviously you just don't see the point in entering a relationship that will soon become long distance. As much as he seems like a nice guy keep him as a friend. If you want to date him later on after you have some you-time then go ahead. But for now, focus on yourself. This clearly has nothing to do with relationships but more about yourself. You seem to be stressed and have a lot on your plate. Take it easy. :)