Well, I'm going to step in here right about meow and give a serious response.
A lot of the points people made were clear, your age does restrict a lot. You cannot drive to see her, you cannot have a lot of the things a relationship includes, and quite honestly, the love you say you have for her is really just puppy love or lust. And don't get me wrong when I was your age I had a girlfriend, so I can tell you this. The only thing it brings is he said she said bullstuff to tr table, and creates tons of drama. Wait until you're a bit older to get a girl.
(don't take this next sentence seriously)
And plus, in 3 years you never know, she could get dat ass and be the most attractive girl in school. Just keep playing your cards right.