Cooper - Royal Protectors, #4

I'm a soldier. My life is built on loyalty- to my country, my unit, my brothers-in-arms. Nothing has ever come before duty. Until Natalia. The bravest, most beautiful woman I've ever met. She's fierce, breathtaking, and impossible to ignore. Maybe that's why when the Royal Protectors asked me to help finish her training, I had to say yes. But falling for her wasn't part of the deal. An attack on the palace while I'm visiting changes everything.
I don't know who needs me more-the royal family or Natalia. Now, I'm torn between two missions. The problem is, protecting one might mean putting the other in danger. My past is closing in, the enemy is getting closer, and I'm running out of time. How the hell do I choose between my duty and my heart?