The Master — Jean Johnson

Eight brothers, born in four sets of twins, two years apart to the day-- they fulfill the Curse of Eight Prophecy. To avoid tempting their destiny, the brothers are exiled to the Isle of Nightfall, where women are forbidden. But when the abducted third-born brother is taken by a powerful and beautiful mage, he wonders if she is his own Prophesied Disaster, his foretold wife-to-be...

Kidnapped from the Isle of Nightfall and taken captive by slavers, Dominor is sold to a lovely mage who promises freedom. But Lady Serina has plans for him; she needs another powerful mage to reenact a mating ritual, to help reverse a Tantric spell cast centuries ago. Agreeing to help her, Dominor doesn't suspect the secret she holds back from him: there is more to this magical mating than the Arithmancer has revealed.

Once the ritual is complete, he will be returned to Nightfall. But when that secret finally shatters, baring the truth behind the misunderstandings now separating them, Dominor is determined to retake possession of the woman who is his Destiny ...