Embraced By the Emperor by Lily Harlem

Isabella of Portugal believes deep in her royal soul that her destiny is tied to just one man. Should she wait in hope, join a convent, or start fighting for what she knows is rightfully hers?
The year is 1522 and Isabella of Portugal has only two choices in life: to wed the handsome and powerful Holy Roman Emperor Charles V or don a habit and betroth herself to God.
Unfortunately, her future husband is flitting around Europe doing what emperors do—wielding his sword, negotiating the expansion of his territories, and charming kings and queens. It appears he’s completely forgotten a wife and heir are needed if the Habsburg dynasty is to continue.