Never go back! And if what broke you tries reaching out to you again, ignore them. A valuable lesson for everyone to know. If they broke you to begin with then he didn't love to fight and be better for both of you.
It can be a bittersweet thing but it's good to listen to the truth rather than accept a comfortable lie. Even if you cant see something but know it's real deep down, believe it. Instincts can show a lot of true colors
Note to self: treat yourself the way you would treat a small child. Feed yourself healthy food and make sure you spend time outside. Put yourself to bed early. Let yourself take naps. Don't say mean things to yourself. Don't put yourself in danger.