Protected Hearts by Em Petrova

She asked for a protector. She got a fake husband. Who knew he could be all she needs and so much more?
When Oaks Malone sees a woman abducted on the street, his military training kicks in and he hatches a plan to rescue her. What he never expected was marrying her to keep her from becoming a pawn in a dangerous plot devised by a terrorist group. Oaks also didn’t anticipate feeling so protective of his new ward…who now bears his last name.
Shiloh knows far too much about her sleazy ex making deals with terrorists. Now she’s caught in a terrifying tug-of-war between them. While Oaks and the Black Heart Security team work to keep her safe, she finds something very unexpected on their Wyoming ranch—peace. The beautiful views are just as enthralling as her new husband’s steely gray eyes. And his kisses and rough hands provide the perfect distraction from her fears. Problem is, he’s too good to be true.
Nothing about this relationship feels fake, not when the ice around Oaks’s heart cracks a little more each time Shiloh looks at him. With time running out and danger closing in, Oaks and Shiloh can’t afford a single misstep. But she’s quickly seeing that the biggest risk in this game might be her heart.