I know how that feels.
you need to just think about you, try to ignore what other people say they dont know what it was like and what happened and frankly its nothing to do with anyone else if you want to be with him or not. Its your life you need to take control. It wont be easy, I know im going through similar myself but once we take control a little it gets easier and easier to regain control of it all.
You got this girl, you are stronger than you realise you just need to find that strong girl inside grab hold and let her grow. xx