The Laird’s Reluctant Bride by Kenna Kendrick

A highland brute, a lass sold for power and a lie that shall bind them forever…

Ivy MacLeod has always felt that fate has dealt her a cruel hand. When her father auctions off her hand in marriage to the highest bidder, there’s only one option: jump into the water from the ship she’s been held captive and pray for the best. And the best turns out to be a brutish highlander she must lie to if she wants to survive.
Little does she know that her deceit will bind them for a lifetime…
Blaine never thought he would see Ivy again, especially not after she disappeared without a single word. But fate had other plans for them. When he arrives at a dreadful auction, he realizes two things—Ivy is a liar and a pawn in a game of politics. And her deception could put her life in danger if she falls into the wrong hands.

So, he does the only possible thing to protect her. He marries her.