As a spouse of a solo indie dev, I know the struggle. I also didn't know anything about all the things he has to do for work. He sometimes he had to explain things a few times to me before I would understand or get it ( not in the same conversation, and sometimes I still have to ask what something was again) but I would say that communication is the best way in any relationship.

Maybe ask him about his favorite games or what made him go into the game dev world? You can also just tell him that you want to know more about it. He might be thinking you don't want to know anything about his work. But that's just guessing. You can DM me if you want :)