@litterbird I think you have it in a nutshell. You have what you have. Enjoy what you have. But will it change? Develop? Move forwards? Maybe not. If you are happy to keep things where they are, as they are, then brilliant but can you expect a lot more, probably not.
My DH made no contact with his sister while she was ill. Barely registered it. He just put it in the ‘Not dealing with this’ box and left it there. No emotional reaction at all. And when I react emotionally to someone close getting ill, he backs off very quickly from me because, I think, he worries he is going to be ‘expected’ to do something, perform in some way that he can’t. It’s very sad.
I often feel like I’m a friend to my DH rather than a partner. A friend who he could go for days, weeks, months without seeing. He would be pleased to see me and enjoy our time together but can he actually be fully engaged in a NT way, probably not. His head and life is too full of ‘him’.