Royal Tease by Nana Malone

Roone… The plan was royally simple…
Go undercover, protect my best friend’s little sister. It should have been the easiest assignment of my life. But Jessa is uncooperative. She’s feisty, mouthy, and stubborn. Oh, and she hates me. Ever since I threw her over my shoulder and carried her out of a bar fight, I’ve been persona non grata.
But the stakes are too high to mess this up. The monarchy is at risk.

Jessa… I can’t stand Roone Ainsley. There I said it. Shoot me.
We go together like lightening and water. His annoying, steady obstinance is going to cost me my job. A job I have worked very hard to keep. No one is messing this up for me. I’ve had enough crazy in my life. But even if I wanted him – which I don’t, but if I did – I can’t ever have him. My life is not my own. I’ve known that since birth.