BD Plans to Turn Son Against Me !!!

I am 25 weeks pregnant and the father of my child has become bitter that I won't get back together with him. Now, he always texts me things like I can't wait until he gets here so I can tell him how you really are or I can't wait until he gets here so I will have someone on my side to talk about you to. I find these comments so stupid, immature, and they irritate me so. I try not to stoop to his level, but every time he texts me things like this it just burns me up because I would never try to turn out child against him. So far I have bought everything that baby boy needs while he has only bought 8 onsies. Can someone please offer some advice. I am tempted to not let my son anywhere near him.