Plz heartbreak overload how to deal with this?

Ok so my ex gf ok i broke up with her twice but we always got back together and i know i prolly deserve this but i realized that shes everything i wanted and id do anything to get her back so we were trying to work things out again and i had so much hope i thought she was gonna take me back and when she did i was gonna treat her like i should have treated her before i learned from my mistake but she told me the other day it wasnt gonna work out then she told me she liked one of my good freinds which three other girls have left me for this same guy so i was devastated well the next day i was alil better and she txt me telling me its my fault how she did me a favor how i never made her happy how i was the worst bf ever and comparing me to this new guy and how great he is and to her old bf how much better they are then me it ended up her telling me to wait for two weeks for her top decide to take ne back i mean if she did how can i get past everything she said how will i know if i truly make her happy and why is thinking about taking me back if she said all these things? i dont get it should i wait on her i mean i still would do anything to get her back but now is it worth it or is it just gonna cause me more pain?