The Bodyguard by Katherine Center

She's got his back. He's got her heart. They've got a secret. What could possibly go wrong?
Hannah Brooks looks more like a kindergarten teacher than somebody who could kill you with her bare hands. But the truth is, she's an elite bodyguard and she's just been hired to protect a superstar actor from his stalker.

Jack Stapleton's a Hollywood heartthrob - captured by paparazzi on beaches the world over, rising out of the waves in clingy board shorts and glistening like a Roman deity.

When Jack's mom gets sick, he comes home to the family's Texas ranch to help out. Only one catch: He doesn't want his family to know about his stalker. Or the bodyguard thing. And so Hannah - against her will and her better judgment - finds herself pretending to be Jack's girlfriend as a cover.

Protecting Jack should be easy. But protecting her own heart? That's the hardest thing she's ever done...