Priest-King's Consort. Huntress vs Huntsman, #5

He's as lethal as he is beautiful, desired and feared by all. She's big, bloodthirsty, and obliterates her enemies. Never should they have met. But they did... When an unknown enemy tries to end the ruling line of the Soul Mages, Verdria is more than ready to defend Priest-King Elect Honryn and his allies in this enemy land she now must call home. But then Honryn demands she also save his sire and two older brothers-save the very soul mages responsible for the deaths of many of her people-she rebels at Honryn's orders, until he explains why his enemies can't die yet. But Verdria will need the aid of another lethal enemy to achieve her goal.  Going against every instinct she possesses, she does as Honryn asks and seeks out his uncle, the ruling Priest-King, for his aid.
Together they form an uneasy alliance that strikes terror into their enemies. While the first attempt to end the ruling line of the Soul Mage empire may have failed, Verdria is kept busy. Many factions deem Honryn too powerful and dangerous and want him dead.  But even his enemies don't know the real reason they should fear him. That they should fear what he's becoming. Because the Serpent God soon plans to claim Honryn as his new mortal host and Verdria as his consort.  Once he does, no one will ever be safe again. But Verdria's greatest nemesis is her own traitorous heart... For she wants Honryn and the monster he becomes.  Tropes: Enemies-to-lovers, morally grey hero, slowburn with steam, never-even-kissed heroine, inexperienced celibate hero, royal romance, forced proximity, who hurt you, touch him and die, touch her and die, court intrigue, 'oops I unalived a bunch of people again' hero and heroine. Author's Note: While most of my fantasy romances are standalone, this one is a continuing story and you need to read Soul Mage first. And by the way, this one does not have a major cliffhanger at the end.