How to Be Good2001
by Nick Hornby
According to her own complex moral calculations, Katie Carr has earned her affair. She's a doctor and her husband David is the self-styled Angriest Man in Holloway. But when David suddenly becomes good - properly, maddeningly, give-away-all-his-money good - Katie's sums no longer add up, and she is forced to ask herself some very hard questions.
— from OpenLibrary
12 editions at OpenLibrary