The Bloodstone Oath by Melle Amade

A war-scarred Fae prince.
A priestess sworn to a life of sacred celibacy.
One living gemstone that drinks the blood of kingdoms.

When Fae Prince Kaelor is forced into an arranged marriage with Selara Mossweaver, the mysterious, celibate Bloodstone Priestess of his realm’s greatest enemy, both expect a political truce, nothing more. As royal Fae, they understand duty comes before sentiment.
But the moment their hands meet, the ancient Bloodstone awakens, whispering cravings and linking their fates. As their desire ignites, they learn the gem’s terrible price: every stolen touch feeds its hunger and frays the very foundation of their realms.
As border skirmishes flare and rival factions plot to claim his crown, Kaelor must choose between the throne that demands his obedience and the woman who kindles his battered heart. Selara, bound by vows older than living memory, grapples with duty to her people against the wildfire of forbidden longing the prince ignites within her.

Ancient rites, buried truths, and simmering desire converge in a race to master the Bloodstone before its hunger plunges both realms back into war. Kingdoms will bleed, gods will fall, and two sworn enemies must decide: sacrifice love for duty—or rewrite destiny together.