The Unexpected Bride (The Highlander Brides) by Gina Griffin

She is his unexpected bride, but he will defend her with his life.

1123 - Scotland's King Alexander reigns while his father-in-law Henry rules England.

Bronte Wesford is England bound. Having lived most of her life in a Scottish convent for her protection she is reuniting with her father and meeting her husband-to-be.
But on her way, she meets a laird.

Shaine McConner is the leader of his clan, protector and out to rescue his cousin and bring him home from the English enemy.
But he also brings home a bride.

Bronte is unexpected but not unknown. Shaine is aware of the enemy that awaits her and takes her into the safety of his clan, determined to shield her from the harm that stretches over borders to grasp her.
Bronte falls in love with Shaine and believes all his promises, even those he never means to keep, breaking her heart with his deliberate lies.

But what if broken promises are your salvation?
What if it becomes king against king?
What if the enemy is closer than you think?