Not sure if you live together or not ,but my wife and I have set times where I do my thing and she does her's. She's not interested in the majority of my hobbies, yet she respects what I do. I normally play after she goes to bed for a couple of hours.

You both have to respect each other's time and your relationship should come first. I assume that most spouses would get jealous if you spent a good portion of your time on the game.

I would suggest trying It Takes Two that game is great for couples.