Bound to the Bounty Hunter by Lulu West

Intergalactic bounty hunter Bodin Hart has accepted his true nature.
He is a deadly beast – a fierce, yellow-eyed monster with an uncontrollable urge to kill.
But he’s having more trouble accepting that his true nature means he must stay as far away from his fated mate Brielle as possible, or risk killing her as he grapples with controlling his change.
Brielle Tideknell is not your average princess, however. And the idea of leaving Bodin alone on a planet populated by enormous roaming creatures likely to tear him apart doesn’t sit well with this witch.
Defying every order Bodin gave her, and refusing to hear the pleas of her sister or of Bodin’s somewhat unconcerned feline companion, Tubbs, she goes to the planet’s surface to help her mate manage the change.
But what she finds there is far more terrifying than she could ever have imagined. And now there’s no telling whether either she or Bodin will escape the planet alive.
As the Dominus continue to overtake the galaxy, worlds hang in the balance. And on the surface of this distant cold craggy planet, Brielle and Bodin must both learn to control powers that threaten to doom them … or to make them the best chance the galaxy has to overthrow the Dominus Establishment.