After twenty-two years together, I sometimes wonder how my marriage to Merryn works. I’m a writer, Merryn is a statistician; I work with words, she works with numbers. I want beauty, she wants function. We come from different worlds.

Merryn arrives to appointments early, I’m occasionally late. I try new things on the menu, she orders the same. After twenty minutes at an art gallery I’m just getting started, while Merryn is already in the cafe downstairs wondering how much longer I’ll be. We give each other many opportunities to learn patience!

We do have things in common—a shared sense of humor,…