I feel like a bad wife..

So couple days ago DH asked how I was feeling with my PPD. So I was honest and said the sadness has gotten a lot better. I love my son so much. But I still feel a little distant from Baby Boy. I told dh it's still a work in progress. My dh looked up and said he thinks I feel that way because it's his son. That he feels I don't love him to the same extent I loved my ex. (Dds bio) I told him that was unfair to say and very untrue. But my love for DH is very realistic and healthy. While the past relationship was a very unhealthy love. I told him I love him he is a much better man and damn sure a much better father. He just looked at me and said ok & went to work. I want to talk to him about it but he just won't. It breaks my heart that he feels this way. I wish I knew how to get it through to him that I do love him.