Violent Angel - Pretty Broken Things, #1

Survival can change a boy to a man. Or a man to a killer. But it takes more for him to become truly lethal. The ability to deliver a blow so fatal, even the most powerful target draws their very last breath. And it's a very fine line between those particular sets of skills being used for good. Or for evil. Elliot Orlovschi can't say on which side of that line he belongs. As one of Eros' Eight-mercenaries trained to use lust as a deadly lure-his goals have always been simple.
Protect the brother he claimed and put the most corrupt bastards in the ground. He loves his job, but he has no illusions about how twisted he is when his only pleasure comes from spilling blood. Until he meets Damon Burrows, a bodyguard who took the wrong client at the wrong time. Stabbing him with a pencil should've been the end of it, but Damon isn't like the lowlife he works for. His sacrifice to save Elliot's brother leaves him clinging to life. Keeping him alive puts Elliot into serious debt-a debt he can only repay by taking the most dangerous jobs, whether or not he's ready for the challenge.
His handlers and his friends all tell him the cost is too high, but he doesn't give a damn. Because after Damon steals his way into Elliot's heart. There's no way in hell he'll ever let him go.