Of course this would hurt and be a shocker too. I have a couple thoughts initially. First is more will be revealed and unearthed when you talk to him again. Whats going through his mind. And his mental state is my next thought. He's so early on, his emotions and thought processes I think will be unstable. Maybe its his feeling he cant fit the role of daddy. Dont beat yourself up over your side of the talk. He struck the most sensitive nerve a momma can have. Rest and regroup your thoughts and soon I think you will get a clearer picture. Last thought, its possibly some of this is to be sensitive to his ex and to not get her riled up over her kids and how they label you? He might have had complaints from her before and wants to keep peace?