Your still young, so I doubt its love. Its just one of those crushes that feel like love.

If you really want to try to get back into her life, I would just drop her a message on myspace just saying hi and ask her how shes doing. Keep it simple. Don't go into how you feel about her or anything like that. (That would sound creepy and make her think your a stalker.) Just see how if she responds to your message. If she ignores you, then you should take that as a hint. If she does respond to you, then you can start making small talk. Work on at least being friends with her and then possibly go from there. Just take it slow.

Keep in mind, she just broke up with her ex, and anything right now with anyone else would probably be a rebound. You don't wanna be part of that.