Out of Control (A Babysitting a Billionaire Novel) by Nina Croft
She's a challenge he can't resist.
Hollywood heartthrob Zachary Hunter loves women—as long as they don't want more than a little fun in the bedroom. When his most recent movie stirs up the wrong kind of attention, the kind that includes an attempt on his life, he hires a friend's company to locate the threat. The pint-sized redhead assigned to protect him isn't what he expects—or wants. Worse, he can't take his eyes off of her.
After ten years in the army, Danielle Sinclair knows how to handle men. With a new security gig to pass the time until she's cleared to return to the military, she's figures her sexy new client will be easy to manage. And then he opens his gorgeous mouth, and she can't decide whether to kiss him or kill him. His sex appeal may tempt her into his bed, but his sexist attitude is unbearable, and she's going to make him eat every single word...