Never Kiss a Highlander by Callie Hutton

Finn Mackay is anxious to make his place in life. But as the third brother in his family, he feels as though any one of the clan’s warriors could fill his job. When the Clan Chief of the Mackays offers the Second in Command position to Finn’s brother, Craig, as a newly married man, he turns it down.
Finn is on a mission to deliver that information to The Mackay and offer himself in his brother’s place.
Lady Alison Mackay knows that her duty as a daughter of the Clan Chief is to marry for alliances. She has agreed to the very strange request put into the betrothal agreement, but since she doesn’t trust men anyway, she doesn’t care.
Or does she?
Her pull to the new Second in Command, Finn Mackay is a strong one. When they are caught in a compromising situation in the dark stables the night before her wedding, a switch in grooms is the only solution. One caveat. She demands independence. He demands control.

Let the battles begin.