"What I Have Written" by John Scott

An audio book.

The narrator and his wife aren’t getting on. They’re in Paris for a while, from Australia. They aren’t sleeping together. They act as a couple in public. He meets Katherine, who invites him to be physical. Instead, they start sending letters to each other, increasingly erotic. She tells him how a young lover makes her try bondage and threesomes.

We get Sorell the wife’s PoV. The narrator’s had a stroke and is in a coma. She reads the manuscript (i.e. the first section). She wonders how much is true. She recognises some of the details, but she also notices errors. She meets Jeremy, his editor. She learns that Katherine's letters were sent to him. He wanted the narrator to leave his wife – Jeremy’s fancied the wife for years. She contacts Kate, asking how much was true.

We get Jeremy’s PoV. The narrator dies - he had the stroke 6 days after starting to sleep with his wife again. He misses the confessional meetings with the narrator, Chris. He sees a resemblance between Katherine and da Vinci’s virgin with child. He’s edited the draft to change the relationship between the husband and wife.