i've been with my boyfriend nearly 2 years, and he's about to finish his 2nd year of uni.
he's still had a great time and although he's 2-3 hours away we've seen each other every fortnight or so. he comes hoem in the holidays so i don't even think of it as long distance really!
next year when i go to uni it will be the test, but i'm confident it can work. either way, i would never break up before you've tried it, because i'd always be thinking "what if"?
we've done it so far, no reason why we can't continue.
his sister and her boyfriend started going out when they were at school, went to uni 5 hours apart and have now graduated, got jobs, and bought a house together.
be positive and talk a lot and you'll be fine!