you will never fully get over that person if you guys have a child together you guys will forever love one another no matter how much hurt and pain one another caused and thats normal if that person doesn't leave your heart nor mind they aren't meant to go anywhere doesn't mean you guys have to make things work but the best thing to do is try to eliminate all confrontation for the child's well being.
Start loving him because you share a child together. For the sake of the child and for the sake of those moment which caused the child to come to this world. Love thy name is surrender. If you can compromise a little DO THAT. This is really wonderful world. Love it.
Sometimes you can still love some one just not be inlove with them. Focus that feeling on getting along with the person for the sake of your child. It is always better to get song with them then hate each other for the rest of your life. Get out with your friends and meet new people. Have fun!