Limited Liability(Sin City 2) by Tricia Owens
Sequel to Becoming Elite. Ethan now lives in Las Vegas with his lover, the dominant Maxmillian Poole. But hes frustrated because hes not working. That changes when a businessman with ties to the mob forces Max to hire Ethan at the Elite Poole where Max has trouble separating business from pleasure. Ethan is supposed to be Maxs secret, but he may not be for long.