Feeling alone.

I just, I feel alone. I'm a high school senior and I don't really have much friends at all. I have a friend who I've been friends with since the 5th grade, but we barely ever see each other anymore, and I have just one other close friend who has so many other close friends like me, that it almost feels lonely just looking at him and how happy he is with all his friends. I mean, I never realized just how much of an impact it has on me. I'm going to college this year and it'll be a fresh start but I'm scared to death I won't make any friends. Really, I think I'd just like to hear any scenarios like mine, and you made friends in college. I need some kind of reassurance, so any stories would really help. Thanks.