You might like her, you don't love her (at younger ages attraction is easily mistaken for love). Trust me, been there, done that.
Thought I was in love at around your age, and the girl actually liked me back... a week later I didn't want anything to do with her, and didn't know how to get her off my back.
And still, every time I talk with a hot, semi-interesting woman, I get that "god damn I love her
and want to get in her pants NOW!" thought in my head, of course a couple of days later I will have forgotten all about her (if I don't, well my girlfriend would eventually beat the shit out of me, and if she doesn't one of her 3 brothers probably would lol).
Anyways, I think
MrTwilliger gave you the best answer you can get from a forum. In my opinion you should just take it easy, ask her out, and see how it plays out from there. As said before, if she likes you back, you'll know it
