Rogue Hunter by Louise Rose-Innes

Drake’s military career is over. This job protecting a wealthy socialite is all that’s on offer.
How hard can it be, right?
Wrong.
Izzy Beaumont is like nobody he’s ever met before. Wild, spoiled, sexy – but also secretly vulnerable, he’s drawn to her like a moth to a flame.
When she’s kidnapped, he’ll stop at nothing to get her back. Even if it means putting himself in the firing line.
Kidnapped by pirates?
Really?
She thought that stuff only happened in movies.
Yet, here she is, imprisoned on this rust bucket in the middle of the Atlantic, instead of on her friend’s party yacht in Tenerife.
Just when she thinks it’s all over, Drake, her mysterious bodyguard, comes bursting in. The strong, silent type, she’s been trying to get him to open up for weeks. Seeing him standing there, a dripping sea-god with abs harder than barnacles and eyes the color of the ocean, she knows that instead of rescuing her, he’s captured her body and soul.