<human>: I'm well aware of the fact that I'm young and I'm sure my troubles don't even come close to others of this site. It's not the first time I've been dumped, but this time it's different as the relationship had become really serious.

I just don't understand how she could suddenly stop liking me at all, even after telling me that I haven't changed. 

A part of me really wants to try and win her back, and another part of me, fuelled by past experiences wants to move on. All I know is that I miss her more every time I'm around her and as we go to the same school it's somewhat unavoidable that I'll see her. I don't know what to do and I'm really upset.

She said that over the week we had been back form the summer she had slowly just lost feelings for me, but promised me I hadn't done anything wrong or that she'd cheated. Can this really happen? Is there anything at all that I can do?

Can you condense the text into a few key points?
<bot>: Do I try and win her back or force myself to distance myself from her? Can people really just "lose feelings" for others without any reason?