Part I: I told DH I want another baby (someday). He doesn't, but agreed to keep an open mind about it.
Part II: We were in bed, talking about our days, and out of nowhere he asks if I would resent him if he never wants to have another baby, because if I would it would greatly influence his thought-process.
I was actually a little bit upset he asked this question, phrased this way, in particular the second part. He left the door wide open for me...all I had to say was "Yes, I would resent you" and it would move the conversation closer to where I ultimately want it. However, it would hurt me more if he resented me and/or hypothetical second child because he really only wanted one (and with the Mirena the chances of an Oops baby are very slim, so it would have to be a conscious decision and not an accident that we had to deal with).
Also--when we decided to have E, we DECIDED. We badly wanted him. We tried for him for over a year. That boy is very, very wanted. I would never want to bring another child into the world that isn't wanted badly, by both of us. I don't want to get pregnant just because DH didn't want me to resent him. I don't think that's fair to any of us.
So, although there was a huge part of me that just wanted to say "YES!" I had to tell him the truth, which is that I might very well be resentful, I don't know. I love E to pieces, and if he's all I get it won't be the end of my world, I'll likely just feel something is missing.
Ultimately, he again promised that he'd keep the door open, but there are things he'd like to happen before he seriously thinks about it (meeting financial goals, moving into a real house and not this tiny apartment (which we are planning on doing in the next year or two), etc). But it's still not a firm No, which is all I want at the moment.
And he also said the idea that we could possibly have a daughter made his heart explode
So, not really much progress, but I feel positive about the eventual outcome. He's been initiating conversations about it, and has moved from "Definitely Never" to "Well, maybe someday I'll consider once we check off things this list". A subtle distinction, but a maybe-someday potentially big one. Definitely a step in the right direction, even if it's a small one. And the things he'd want to happen first are things I'd want to happen first, too.