Leomama, I may be way off the mark here, so ignore me if I am wrong....
You have a unique relationship with him and maybe he feels, because of who he is at his core, that your dynamic is exactly way it should be. I am not saying it is right or wrong. I am simply asking if it might be a possibility.
A lot of the time it's an equal-but-different kind of thing.

Possibly I am wrong and you are no longer together, and if that is the case, I apologize.

Whichever it is, your feelings are valid because they are your feelings. If you are upset, then you are upset. I just would not suddenly cease to share as retaliation. It seems wrong to me.