Seriously, stop talking to her, stop making any contact with her. Believe you me, i wont lie, there will be days you'll want to tear yourself apart and contact her again, but in no way shape or form can you. Until you are 100% sure you are over her.
I've not spoken to my ex in like 6 weeks now, no contact at all, and every time i see a car which i believe is her, my heart just drops. Until shit like that stops happening i'm not over her, but rest assured, it's 100x easier without any contact.