I know one couple who dated long-distance, flying between Los Angeles and San Jose for nearly 5 years. They have been married for nearly 10 years now. It's the only case where I've seen it work, and the couple was near 30 when they started.
You're young and, unless you are completely sure this is the person with whom you want to spend your entire life, you'll be wasting your time. Get out there, have fun and explore, and if you're still interested in each other when you're able to see each other regularly again, go for it.
LDRs suck.