Guarding the Crown — Vivian L. Holt

Princess Samatha was born knowing exactly who she is and what she is supposed to do with her life - and has told everyone as much. The only flaw in her plan is underestimating the stubbornness of the man she loves - Zandor Romanlin. And when he turns his back on their love to leave home, both families must band together to help Sammy reach her place in history.