Knave of Broken Hearts by Tara Lain

Jim Carney has a full time job—running from himself. Since he walked out on his wealthy family at sixteen because he’d wrecked his best friend’s life over some yaoi graphic novels, Jim has lived a macho, blue-collar existence of too much booze and too little responsibility. Then Billy Ballew, the man Jim most admires, gives Jim a chance to come through as his construction supervisor. For once, Jim is determined to make someone proud. Then Jim goes in for a physical for his new job and his yaoi dream comes to life in the form of cardiologist Ken Tanaka. Jim discovers he has two heart problems—a wonky mitral valve and a serious attraction to his doctor. But Ken is a major player, and Jim might be just a notch on the doc’s stethoscope. To Ken, Jim is unforgettable—but the living embodiment of his traditional family’s worst nightmares.

How come the minute Jim decides to be responsible, he finds himself taking care of his kid brother, getting a proposal from a wealthy woman, making a deal with the devil, and winding up in the hospital—when all he really wants is the Knave of Broken Hearts?