You know there could be a lot of reasons that he called. I don't think it is what you think. Somewhere in there I think he still has genuine concern and happiness for you as you succeed. Why? Who knows and you shouldn't read too much into it because you are focusing on the right person now... YOU! Nice thing about not having children is that you can worry only about yourself and put all your effort where it is most needed. then worry about other stuff when you headed in the direction you have chosen.
As your friend I would say that it sounds like you are getting there. Your H is probablly noticing that but more importantly and hopefully ... you are.