The Right Wrong Turn by Heidi Champa

Derek Owen has made a new life for himself in Austin after leaving his hometown of Cedar Bluff years before. In his rush to start over, he left behind his first and only love, Luke McLeod. He's moved up and moved on with a job at an accounting firm and a completely inappropriate relationship with his boss, Ben Dickson.
When Derek and Ben are caught in a compromising position, Derek is sent into exile, ostensibly to do an audit of a ranch near Cedar Bluff that's keen on expansion. Going home means confronting the past, and Luke, who is still living there. Derek soon finds himself tangled up in small-town secrets and lies. And, fighting his old feelings for Luke.
Can Derek figure out the right way forward, or has his life taken one too many wrong turns?