Most Helpful Girl
block and don’t waiting him to come back to you. move on. Don’t listen anything about him. I think this is the best way you can move one very quickly.
Most Helpful Guy
Block him/her on all social media accounts and messaging apps. put away things which reminds you about him/her. try to keep yourself occupied with some or the other work and you will be out of this even before you know it. most of all try to accept that things weren't meant to go well so they didn't and move on