Night's Templar — Joey W. Hill

Book XIII of the Vampire Queen Series (While this title can standalone, some familiarity with the Vampire Queen world will enhance enjoyment.) Lord Uthe, a member of the Vampire Council, was a Templar Knight centuries ago. Even up to the present day, he has attempted to honor the spirit of the Rule, despite the volatile and highly sexual nature of the vampire world. Yet now he's caught the attention of the Fae Lord Keldwyn, liaison between the Council and Fae Court. Keldwyn challenges Uthe's emotional isolation and dominant nature. When a quest from Uthe's past requires Keldwyn's help to protect both their worlds, Uthe will have to decide whether the Fae male is a gift from God to be cherished and trusted, or a curse that will make Uthe fail the Order he promised to serve all his life.