Agatha Christie. Evil under the sun (№ 421784)

I remember that I once met a charming couple. They gave the impression that they continued to love each other dearly even after many years of marriage. Each of them surrounded the other with constant attention, and I envied the happy fate of this woman. If it were possible, I would gladly switch places with her. Later, I learned that for eleven years now, these two, being alone, have not said a single word to each other. Moral of the story: Don't envy anyone!