We Don’t Live Here Anymore by André Dubus (1984)Read about the other entries on the list.
This triptych of novellas centres on two married couples, Hank and Edith Allison, and Jack and Terry Linhart. In the title novella, each of them cheats with the other’s partner. In the middle story, Adultery, Edith falls in love with a dying priest. In the final piece, Hank is divorced and trapped in his alternately self-aggrandising and self-pitying habits, unable to find happiness or peace. As a whole, the book asks, as Dubus’s son André III noted: “How can a man and woman ever be truly married to one another without losing their very souls?”
--Marshal Zeringue