What should I do?

Well as I posted yesterday, my son's POS father is leaving me hanging once again. He claimed that he still thought that it was best for him to not be involved, but then when i suggested that he go ahead and sign away his parental rights he got upset. Obviously part of him is not so sure that he will never want to know his son, which pisses me off. Where have you been the past 7 months? Oh, that's right, living your life like nothing ever happened and your baby didn't exist. I'm just trying to move on with my life and he can't even let me do that. I'm just afraid that now that he's lost his girlfriend (in my opinion she is the main reason he did not want to be involved) that this is the only reason that he might decide to be around. I really don't think he cares about my son, I think he resents him for existing actually. ButI guess I just didn't want Peyton to be told one day that I kept his dad from him. Now that I think about it though, I feel like I should just do what I can to disappear and hope that he won't try to find us. At first I was going to give him more time to think, but WTF? He's had the last 7 months to think about it and he chose not to. His girlfriend and his life were more important to him. Also, I don't see what needs to be thought about? He is your son- either you want him or you don't. There is no maybe. So what do you think, should I just go ahead and just change my #, delete my myspace, etc now? I'm sure he will just end up bailing once again anyway.