I am so frustrated with B's dad!!!

He has seen him for about 10 hours of B's 2 1/2 years of existence. We weren't together when B was born and he actually had the nerve to bring his new girlfriend to the hospital with him (after I asked him not to). I maintain a relationship with almost everyone else in his family (parents, aunts, uncles brothers) and had been sending him pictures and updates on B until he closed the child support case without telling me (which I then reopened). Since then I have heard from him twice, he sent cards on B's birthday and Christmas.
A couple days ago I emailed him and told him that we would be paying a visit to B's paternal side of the family in Colorado. I asked him what he wanted as far as a relationship with B goes, and told him that I would not force it on him, but I will fully support him in establishing one. I would prefer that he stay out of our lives forever, but it's B's dad and I'm trying to think of him. I even told B's dad that I would make our travel plans around his schedule so he could travel up to this parents to see B.

So last night I get a response, he doesn't want a relationship with B right now because he feels it would be more of a relationship with me, which he doesn't want (the guy can't get it through his head that I NEVER wanted one with him either). He said that at some point he would like a relationship with B, and to be able to converse with him, but not through a mediator. But he still wants me to send pictures.

Does he not understand that me sending pictures is a relationship with him in some form?!??! It's not like B goes to the store and buys cards to color and send him, that's my doing. It's basically just a relationship where I do all the work, and at this point I am over trying to include him in B's life. Even if he waits until B's 14, there will have to be some sort of relationship between two people that are parenting the same child!

I'm sorry I'm ranting, but it took so much for me to write that initial email and try so hard to foster this relationship when in all honesty I wish he would fall off the face of the planet, and then I feel like I just got slapped across the face. Would it be unreasonable of me to send that email to his mom and tell her that from now on I won't be contacting him and she could forward pictures and such to him? I just don't have the emotional reserves to deal with him anymore...

Hey mom, take a cold shower, I hope you feel better after venting out.
Why is so hard for us adults to keep it cool after a brake up for the sake of the kids is not an answer I can give. Many times I want to cut ties with my daughters family but I know I can't, children need the other parent as well as grandparents, uncles, aunts, etc.Out of all the problems I read here at least I'm not doing as bad, my ex, due to her injuries is not much of a threat.
I know many times we want to cut all ties with the other side, you, apparently feel you are better off without him in the picture but you know that, unless he is a constant disappointment to your B he is going to want him nearby. My daughter just started kindergarten and now, for the first time, she is realizing she should be living with mommy too.
See if you can get a third party to talk to him and try to back off a little bit so he doesn't feel like he is having a relationship with you and see what happens.
Good luck
Adrian