A Vampire's Curse Novel

Gualtiero is a vampire who has been existing for over two centuries. He had long given up on any kind of interaction because of a dark past he has been trying to erase from his memories. Until he met a fascinating human named Diana during one of his hunts. It was an instant attraction between them. Unknown to Diana, Gualtiero has been trying to escape from an ancient curse laid upon him by the vampire queen. Diana, on the other hand, has a destiny to fulfill. She came from a family of vampire hunters. Would their love be doomed for all eternity? Or is it true what they say that all is fair in love and war?