I hate the word baby daddy but that's what I have now. he cheated on me a month after we lost our…

I hate the word baby daddy but that's what I have now. he cheated on me a month after we lost our child then has the audacity to deny the one we have left because I told another man that I lost my child. yet still wants me to name the baby after him. he is not getting your name!!! why would you want him to have your name if you don't think he's yours? thing thing that makes me so mad is I know how I can be and I changed for him. I know I can be unfaithful. but I was faithful to him. and now he's denying my baby. I'm Trying my best not to get mad, not to be upset, not to stress about the situation but my heart is broken.