I thought my crush liked me because she stares at me often, but I had been thinking that she was just looking at the boy next to me or in front me of the desk rows. I couldn't really tell if she liked me or not, but yesterday I think she asked me, "Why do you love me?". I don't even know if she likes me back.

Get to know her. Just enough to be her friend, but not too close where you become the "best guy friend who she can talk about other guys with". Then you'll know if you're compatible. Then, when you know, ask her out. If she says no, then you can start getting over her without worrying about it.