A Kingdom of Venom and Vows - Holly Renee, Sourcebooks, Inc

I entered into this bargain—my mate or my freedom. But I underestimated the crowned prince who took me. His touch is like venom.His vengeance is lethal. He craves a power I no longer hold, and he'll sacrifice every part of me until he gets it. But I don't belong to him.I belong to his brother. His brother who will come for me, consequences be damned. My fate is entangled between two princes—one who craves my power, the other who covets me—and I have more to lose than I ever imagined.War rages in a game between queens, and I have become their pawn. But I will fight for my life, for my mate, and he will raze kingdoms to set me free.