No you are by far not being petty.
Your Mom says that because she doesn't know about DB. ;\)

He's trying to reel you back in. Stay dark and only contact him when you have to about the baby.

Unless he shows you that he is serious about piecing your R back together you are better off emotionally, if you don't keep subjecting yourself to his crap.

J

You don't get to choose how you're going to die. Or when, you can only decide how you're going to live now. ~Joan Baez