Break up with your boyfriend if you can't stand his child?
That's my guess.
I have to totally agree with rockrose. When with someone that is a parent, it is our job to see their child as their primary responsibility and obligation over and above us. He loves his child. I would never be with someone who didn't care for my child or called the names.
I do think it is easier to date someone without children and that may be the most peaceful route for you to take here. good luck