Quoting *Soon 2B G0rda*:" How old are you guys? It sounds kinda immature to not let him in the room just cuz he broke up with you"
I was just about to ask the same thing.
It's his kid, regardless, and you might regret it later on if he is not there but it is entirely up to you who makes you feel comfortable and who does not make you feel comfortable during delivery.
He sounds like a real prize anyways...leaving you for another chick and getting arrested while you are in the hospital so if you chose no, I wouldn't blame you.