Yours, Sterling by Sydney Winward

If the enemy finds her, they will kill her.

An arranged marriage to a younger man wasn’t what Kathleen de Clare had in mind for her future, but after an assassination attempt on their wedding day, a war tears them apart. Sequestered in the safety of the mountains stitching up injured soldiers and mending broken bones, she must wait out the war.

But what if it doesn’t end?

For all his life, Sterling Winfield has only known loss. His parents were assassinated, forcing him to take the throne at a young age. When his new wife’s very life is threatened, he does the only thing he thinks he can do. He hides her. But are letters enough to build a friendship with a stranger and keep their relationship alive? Will he lose her to war? Will the distance destroy what happiness they could have had together? Or will their reunion be as sweet as her letters?