In the Arms of a Highland Brute by Kenna Kendrick

She was not prepared to fall in love with her false husband…

In the aftermath of loss, Alba Menzies swears off marriage, having witnessed her father’s heartbreak after losing her mother. But when duty calls and she’s forced into an arranged betrothal, she concocts a daring plan – to pretend she’s already married.
However, her scheme relies on the one man she despises the most – Magnus Murray…
Magnus has no desire to assist Alba Menzies. Yet, playing the role of her husband is her last hope. Despite his stubbornness, he cannot turn a blind eye to her struggle and agrees to a false union that could lead to their demise if ever exposed…
Against all logic, Magnus finds himself falling helplessly for the woman he swore to despise.
When strange accidents begin to occur, it is unclear who is the target, Magnus or Alba. And as the danger grows, Alba faces a heart-wrenching choice: whose life to sacrifice.

She vowed to loathe him forever. But some say forever ends when you say “I do”