Does she like me or am I in the friend zone?

I've known her since like second grade and we were best friends. Then she moved away like six years ago, she came to visit last week and ever since we've texted nonstop. Another one of my friends like her and she shot him down so then the question " I text her nonstop and he texts her once in a while and he's the annoying on?" and her comment was that she's closer to me cuz I'm her oldest friend... Everytime we tell eachother our favorit song(cuz our fav song changes every other day) hers is a love song like smile by Avril Lavene and worldwide by big time rush( just look at the lyrics and you'll see why I'm troubled) and I looked at her profile on fb and her statutes like totally changed from angry and hate the world to im so happy and love song lyrics. So what's going on??