sIn & ladyhawke gave you great advice. you said you are happy with yourself and by yourself but it's just the first time you've been in love.
i dated a guy in my first year of college who was 6 hours away from me, & neither of us had cars, so it was similar to your situation. i simply had to fill my time up with things i loved to do--even just being with my close friends and staying occupied. after i learned this i felt genuinely happier and healthier, and all the more satisfied with life. i became incredibly independent, &when we visited e/o, it was 10 times as wonderful b/c of how overall content i was & he could see that. this made him love me even more!!
it was DEFNITELY awful to be away from him, but just keep communicating w/ each other and do all you can to see each other and find out if it will work. until then, go out with the girls--and tell them all about your boy!! that will make you feel closer to him too. good luck girl!