The Wolf Lord by Ann Aguirre

Roguish. Reckless. Unreliable.
Raff Pineda has a certain reputation among the Animari. He’s the one to call if there’s a party starting, not the man to rely on when all hell breaks loose. Though he’s nominally the leader of the Pine Ridge pack, he defers to his second on the tough calls. Raff prefers to live fast and hard and keep his heart hidden, but a certain Eldritch princess won’t fall for his usual tricks, and their contract political marriage may be anything but convenient.

Ambitious. Elegant. Isolated.
Princess Thalia Talfayen may not have been raised by a witch in a tower, but she’s spent the last few decades locked up for a failed insurrection. Plotting and scheming comes naturally to her; personal connections do not. Since she’s come this far in her unstoppable quest to claim the silver throne, she won’t hesitate to do whatever it takes to unite her people, even if that means giving herself to the big bad wolf…