So, what is he trying to do now?

The father of my child and I broke up about 2 months ago. It was a pretty bad breakup. I mean, I cried, and cried for weeks. He didn't seem to show anykind of emotion towards me; even though I was really really hurt. 3 days after our break up I find out he's with some one else. Now I'm at the point where I really don't care anymore. I continue on with school, I am there for my child(he is too.) And, I am sticking to my new years resolution of losing weight. I have had no contact with him for like 1 month, but all of a sudden he's starting to call me out the blue. Sometimes it's to chit chat, and other times it's to ask me meaningless questions. Then he asks if we can still be friends. I really don't want to be his friend, and I really don't want any kind of contact with him. I am trying to pick myself up and keep it movin, but it's like he's raining on my parade! What do I do? And what is he trying to do? I just don't get it.