Most Helpful Guy
No if he cheated on you then good riddance. Usually when you get cheated on you want to have the upper hand and make sure he feels bad and never cheats on you again. The way you acted you would have given him full control he knew he could cheat on you without you leaving.
Most Helpful Girl
You should do your best to forget about him and move on. Even if you were to get back with him, you could never trust him again. I know it can be difficult but you shouldn't waste your time on someone like that. Find someone who appreciates you.