Let time wash away the mental image she has of you.
You can’t paint over a used canvas. You need a blank one to paint yourself as her new lover.
30 to 60 days of no contact should do the trick. (In case you’ve been very close friends, I’d give it 90-120 days).
Step 2: Interact With Other Girls
During this time of no contact, you might feel the urge to talk to her, check out her social media etc.
It’s hard to logically talk yourself out of doing all that.
So, you need to replace the void she has left... with other girls.
Find and talk to other girls, even if you aren't totally into them.
Not only will that help you practice your social skills, but it’ll also put you into an abundance mentality.
You’ll show yourself that there are many girls out there that you can have.