Can Abusive Boyfriend like me, change forever?

Hi I am an Abusive Boyfriend. I was in relationships for 13 yrs, 3 years back my behavior became very Abusive, but form last 8 months I have changed 80% of my basic behavior, on the better side coz I understand how important she is for me, I what to keep her happy forever.

Two day we had a breakup. Coz someone told her that Abusive Boyfriend can never change their basic behavior. I want to change my behavior forever; I dont want to lose her.....

PLEASE HELP.....