Reading shit like this almost makes me a little mysogynistic(spelling?). I and every kid on this forum has experienced atleast 1 one-itis and it sucks. It gets me pist off at women hearing stories of them just playing with dudes like a dog with road kill. It looks like your deep into the friends zone or the girl is just as confused as you(unfortunately, most likely not).
I'd suggest doing whatever you can to get over her and get her off your mind. Whether it be a sport, other girls, partying, etc. Just don't think about her. When she gets back, show her what she's been missing and talk to her as if you just met her. Most of this rests on you.. how well you can keep yourself together an not turn afc nice guy, and how well you can run your game on her like she's a regular pick up.
Good luck
