First of all, thank you KG for some perspective that has helped me with my own situation.
Secondly, I am moving into the same arena as you, except D13 is being told of H's GF next week, S16 knows.
I agree that maybe H is clueless about the dynamic he portrays in emails, my H is in the same place, cares about me, but not for me, if you know what I mean.
CoParenting should be met in middle. Perhaps you have to discuss that evenings nights weekends doesn't work for you and perhaps you guys can work out something together?
I am not ready to meet GF face to face either and H wants big look how we are as well. I just told him that the best I can be is neutral. I am lucky though, they are an hour away...:)