Most Helpful Guy
Find another guy to treat you like shit.
Or... Quit dating for a bit and meet people, don't date them, just meet them. You need more life experiences and interactions with better, nicer people.
You can't get over a guy that treated you like shit for one of 2 reasons: you love/loved him or you think you deserve to be treated like shit. Meeting people will show you what decent couples and love looks like and show you how you deserve to be treated.
Most Helpful Girl
Block him on everything , find something else to focus on instead of thinking about him. It will be much easier with time passing and you ;; be able to fall in love with someone else again