Playing Dirty: Bad Boys Undercover / HelenKay Dimon

As an elite Alliance agent—the joint undercover operation of MI6, the British Secret Intelligence Service, and the CIA—Ford Decker lives for the adrenaline. But when he befriends sexy property manager Shay Alexander in hopes of finding her cousin, a known national security threat, Ford crosses the line, getting to know her better . . . in bed.

After being burned by her last relationship, Shay wants to take things slow. Yet she can't keep her hands off the drop-dead gorgeous hottie who's moved into her apartment building. So when Ford's identity as an undercover agent is exposed, his betrayal cuts deep. Shay never wants to see him again, but Ford can't let her go, not when her life is still in danger. He will sacrifice everything to protect her, then be prepared to walk away from the only woman he's ever loved, even if it breaks him.