The Vampire's Kiss by Vivi Anna

Olena Petrovich had seen more than enough death and destruction in her three hundred years. Now the vampiress fought as a CSI agent. But nothing about this crime scene seemed right including the arrogant outsider who challenged her authority. Sexy and cocky, the human was downright irresistible...even to a vampiress who should know better. After just one kiss, Olena wondered how she could ever spend eternity without him.

Vampire's Tango by Michele Hauf

Faced with an early death, Veronica Marshall became a vampire hunter to do some good in the world before being forced to leave it. But after her game of cat-and-mouse with vampire Alexandre Renard turned into nights of unforgettable pleasure, how could she destroy the man she came to love? With time and their enemies against them, vampire and slayer will have to fight to win just one more day in each other's arms.