The Court of Thorns and Wings (2) (Fated to Darkness) by Jen L. Grey

Torn between vengeance and the pull of their fated bond, Tavish must navigate deadly politics, a dangerous rebellion, and his own heart to protect the woman he was meant to destroy.

He claimed her, not for love, but for vengeance.
Yet his enemies had other plans.

After Tavish, the ruthless Unseelie King, stole Lira and brought her to his kingdom, he fully intended to drain her royal Seelie blood to free his people and reclaim his rightful lands.

When Lira teetered on the edge of death, something inside him snapped and altered his plans.

Once he succumbed to their fated mate bond, her death was no longer an option, and he stopped fighting the inevitable pull, knowing this very decision could incite his people to rebel against him.

Though he’s determined to find another way to free his people while keeping Lira at his side, the Seelie attack, taking Lira from him.

She’s returned to Seelie land where her parents intend to hand her over to the dragon prince—the man they betrothed her to years ago.

Everything stacks against them being together, but Tavish refuses to accept defeat.

Lira is his… and no one else's. And he’ll kill anyone who gets in his way.