When at War with Witches by Holly Day

Curses, monsters and arranged matings!

Rourke Flint, alpha of the Flint Pack, is sick of being at war with witches, sick of watching his friends die. So sick of it, he’d traded a piece of land for a witch to take as his mate in hopes of building an alliance. But werewolves mate for life, and now he’ll be forever tied to whichever witch they’re handing over.
Ezra Inaxx Kuxium Enizax is a useless witch and the one the clan decides to sacrifice to the monsters. He’s never met a shifter before, but he’s heard the stories. Deviants. Beasts. Giants. And now he’ll spend the rest of his life with one of them.
Rourke soon realizes the witches don’t want a treaty, and Ezra was sent to him as an insult. Ezra knows his clan never intended for there to be peace, but Rourke isn’t nearly as cruel as he was led to believe, and wouldn’t peace be a pleasant change? What if he could give Rourke enough information to achieve it?

Trigger warnings: This book contains some dubious consent, off-page animal cruelty, and a healthy dose of gore.