Two People by A. A. Milne
How well can you ever know another person?
Happily married, Reginald and Sylvia seem to lead a perfect, and perfectly quiet, life. They have more than enough money and their own country house. But when success overtakes them, and allure of London life pulls Reginald in, they find parts of themselves they never knew. Where does their happiness really lie?
Reminiscent of Evelyn Waugh, this wry, intimate examination of a relationship is a gem of 1930s literature.