In 1994, fifteen year-old classmates Josh and Khadijah catch his father and her mother having an affair. That discovery and the ensuing fallout leads to the pair forming an unlikely bond and making a vow that they’ll never, ever, cheat on anyone. This poignant and at times absurd coming-of-age story is just the starting point of “Good Kids,” a novel that’s getting a lot of buzz for its author, Benjamin Nugent, and has critics comparing his first foray into fiction with the likes of Jennifer Egan and Jonathan Franzen.