NEW YORK TIMES BESTSELLER • A witty and emotionally charged novel that delves into the heart of a marriage, and how those we love and think we know best can sometimes surprise us the most“A delightful take on the mixed blessings of marital longevity.”—People   After ten years together, Sylvie and Dan have a comfortable home, fulfilling jobs, and beautiful twin girls, and they communicate so seamlessly they finish each other’s sentences. They have a happy marriage and believe