One key to a happy marriage

Any two people have things in common and things not in common. Particularly likes and dislikes, like music, for instance. The key is to emphasize the things that are in common, and spend a good bit of time on them, and be tolerant of the dislikes. For instance, I like some forms of jazz; my wife does not. I listen to it a good bit, but usually by myself. On the other hand, we like old movies and old radio programs, and we spend a lot of time listening to or watching them together.