Tyran, you're getting great advice from Invictus.
I was/still am in a very similar situation to you, and trust me, you don't want to go to a school just because of a girl. I had friends that chose to follow girlfriends to schools and they promptly got dumped once they got there, and then were stuck at a school that no longer had any appeal to them.
I've kept a relationship going through transitioning to college so far, and we're over 1000 miles apart, so it does happen, but put the choice of school first, and the girlfriend second. College choices aren't the type of thing to put on the back burner for a high school sweetheart, and if your relationship really is that solid, she'll be supportive of your choice, regardless of the distance from her.
Go to the school that you want to go to, not the school that gives you the most opportunities to see your girlfriend.