Well first off you have a child with this guy so you cant really just forget about him. He is going to be the father of your child forever.
So in a way he will always be in your life. What I think you should do is call him speak to him firmly and say that the relationship is over and there is nothing that will change that.
Let him know that you will be civil for the childs sake. But make sure that he knows that the friendship you may have in the future because of the child will never result in a reconcilliation.
I know from personal experience that saying all this will be the easy part. Getting over him and actually trusting again is the hard part.
It will be something you have to work at. What I would do to get over him would be to go back to what you were doing before you were together.
Maybe start going out with your friends more. Plan activities for you and your child to do. Get together with family members.
Just keep yourself busy dont sit at home and dwell on him. You also said you would like to be able to trust again.
You need to give the next guy the benefit of the doubt. Unless he gives you a reason to not trust him.
Dont compare him to your last relationship. It will cause problems. Relationships are built on trust.
