Hmmm, You must have told her lots of things.(Just a guess) For example,
Promised her heaven on earth(even when u can't afford it)
Promised to be the man of her dreams
Raised her hopes so high that she was basking in the euphoria of it all,when u broke up.
Maybe u're her first love or better still,u took away her innocence.(u get meĀ

)
If i may ask,why did u guys break up and how old are u both?
Answer me and i will advice u on wot to do next.
But bear it in mind,that it's always hard to move on especially when someone is head over heels,