You know, I can't speak for everyone but I don't think of him unless something comes up that sort of "forces" me to such as Dear Hubby asking or saying something!

For example, I go literally months without a thought and even now as I'm answering you I'm not thinking of "him" but more like this whole other, weird person who does not seem like me at all and this person "she" knew.
So I don't think he's trying to spare your feelings. I suspect he is thinking about work, home, the kids, bills, the dog and cat, you, and what he has to be thinking about...possibly some music or a certain show you two watch.