Her Devilish Duke by Tessa Brookman

Their marriage was conceived on rules. And she will break every one of them to reach his heart…

Desperate to escape a terrible fate, Lady Anna runs to the Duke of Ashden’s castle and asks for his hand in marriage. But what she didn’t expect was for him to turn her down and take her back home…
Duke Colin doesn’t believe in love. After witnessing the fate of his mother, from his father’s cruelty, he vowed never to, under any circumstances, fall in love. But when the enchanting Anna shows up at his doorstep, he finds himself at a crossroads…
When faced with Anna’s true plight, Colin decides he will marry her, but under eight unique conditions, the most important of them being: their marriage will only be of convenience and they can never, ever fall in love.
But Anna will not let the reclusive Duke stay shut away forever as she strives to break each of them…