Most Helpful Girl
Block her on all social media so you can't see what she posts & distract yourself. Go out and meet some chicks.
Most Helpful Guy
I can understand. How are you now? I hope you are okay. I can understand this, the fact she moved on so fast indicates she didn't really have any deep feelings towards you, otherwise it's surprising someone can move on so fast.
Well one way to get over her is to pretend as if she doesn't exist and don't keep any contact with her whatsoever. I know it's easier said than done, but I hope you understood?