Is it possible to have a long term relationship btwn a Saggi leaving for college in D.C & a soph Capri n H.S?

Well, this guy and myself clearly like eachother, he's very intellectual, smart, is in a band,sociable, outgoing, and very attractive. He's a Saggi and I'm a Capricorn, even though I don't 100% believe in astrology, I looke ours up out of curiousity. He told a bunch of friends that he likes me, i told some of mine as well. When he gets around me sometimes, he gets nervous, turns a lil red and so on. In school we would p eachother in the hall and sometimes either one of us would say hi first, it was mostly me though. Well, I went to his work with my friend and I felt like we made a connection, my friend said he was constantly looking at me, and I was looking at him. Anyways, I asked him about his grad party he was having, he said "you'll be there right." Well, my thing is I really really like this guy, but my thing is, if he goes off to his University will he find someone else. My thing is what's the point in progressing what we have, if might find someone better? I really like him