Evermore — Lynn Viehl

A WILLING SACRIFICE...
They are the only scars that mar Jayr's milky skin. Scars left by her Darkyn master, Byrne, when she gave her human life to save his. Made immortal, Jayr has served as Byrne's faithful seneschal -- and secretly loved him -- for centuries.

AN ENDURING BOND...
Every full moon, Jayr and Byrne renew their oath of loyalty by sharing each other's blood. Although the erotic ritual has become the only intimacy and pleasure they know, the price of immortality demands that they never be more than master and seneschal.

AN UNIMAGINABLE END...
Unbeknownst to Jayr, Byrne decides to leave the Kyn and retreat to a life of isolation. And the sole purpose of the tournament he's holding is to find a new master for Jayr. As the Kyn fight for Byrne's realm, hidden passions and ancient grudges flare to life, threatening not only Byrne's sanity but Jayr's very existence....