The Earth Schorl's Kiss — E.A. Reynolds

Mallory Creed is supervisor at the Hard Line Agency with a love 'em and leave 'em attitude that's kept him a single Elemental Air witch with a reputation for being cold warrior who gets the job done, but one steamy night with a subordinate turns him into a hunted man. Tyler Sands is used to living in the closet and having meaningless affairs, but one taste of Mallory has ignited a scorching hunger in him that's transformed him from ordinary Earth witch to Elemental vampire intent on claiming his mate. But the death of Tyler's uncle, the guardian of the Earth power-seat reveals Tyler as the guardian that Mallory must protect. Living in close quarters, Tyler assumes Mallory's only interest is a quick fling while he keeps him safe. Then in the final stages of his transformation, Tyler's life on the line, and Mallory has to fight for love or lose his mate to death.