The Wedding Night Before Christmas by Kati Wilde

When an opportunity to take everything from the powerful family who destroyed his mother’s life falls into Caleb Moore’s lap, he needs help from the one person with more power and money than they have—business mogul, Audrey Clarke. The trick is getting her attention. So he approaches the infamous ice queen with an unusual proposition: marriage.
The odds of a snowball surviving in hell are better than the chances of a rich, classy lady like Audrey Clarke marrying a mechanic from the wrong side of the tracks. He only hopes that she might consider a business partnership when she’s finished laughing at his marriage proposal.
He never expects her to say yes—or that the ice queen could burn so hot. Because Audrey Clarke isn’t cold at all. And if Caleb’s not careful, the only thing he’ll give her for Christmas…is a broken heart.