My girlfriend said she had enough of my **** and packed up and left what do i do to show her i can be differen?

,y girlfriend of two years walk out of my life and i see that i drove her away but the time i have had a alone the past to days i just want her to give me another chance. she cheated on me cause she didnt feel wanted and i always was telling her that she was cheating so she did. we talked about that and i told her i was going to stop and love her we did good for a week and the the guy she cheated with text her and i lost it and acted out of control. the next day i come home from work and she has packed all her things and left. i want to be with her and fix things i feel she gave up to quickley on me and i can be what she wants. i text her and she says noithing back and she doesnt call me im wondering is she done or is their away i can when her back.