445 books based on 812 votes: Thoughtless by S.C. Stephens, Arsen: A Psychology · Romance · Science · Science Fiction · Self Help · Sports · Thriller · Travel · Young Adult · More Genres Not almost-cheating nor characters hooking up after a separation. Not Quite a Husband (The Marsdens, #2).
Books shelved as cheating-husband: Tear Stained Beaches by Courtney Giardina, Slip of the Tongue by Jessica Hawkins, Owned by the Badman by Hayley.
Not just one of the best novels about marriage and infidelity but one of the In the title novella, each of them cheats with the other's partner.
I swear I'm happily married but I LOVE cheating books (I think I once .. New Adult Romance stuck between a boyfriend she is comfortable with, or to mine by Emily Giffen, that includes cheating with her best friend's fiance.
Heroes and heroines who cheat tend to be an automatic turn-off for most feelings are reciprocated, but dating your dead ex-fiance's brother is.