Beautiful Gravity by Martin Hyatt
From the publisher: Loner Boz Matthews spends his days working at his grandfather’s Louisiana highway diner. His only friends are the Pentecostal preacher’s anorexic daughter, Meg, and the ghosts of dead movie stars. But when country music outlaws Catty Mills and Kyle Thomas come to town, Boz’s world is turned upside-down, leading to an emotionally turbulent and sexually liberating four-way relationship that challenges small-town beliefs and changes lives forever. Beautiful Gravity is a story of broken dreams and haunted Southern nights—a reminder of what it means to be loved and what it means to be set free.