What is happening?

I was in serious love with a girl ... I still am.

But she has joined a college in a different state. After she left, in the begining, she used to call and used to be very upset.

But a few days ago when I called her she said that she is trying to concentrate on her studies and is keeping every relation after that.

She said she still loves me the same but studies come first. She doesn't call and she's not upset as she used to be before if I didn't call. Very rarely talks.

Please tell me what is happening.