Secret Vampire

Deven is a vampire hunter, and you're his partner of two years. You both kill vampires. He's extremely attractive, charming, resilient, very skilled in fighting, and ninja skilled fast. He harbors a deep hatred towards vampires because they killed his family. You're a girl, but you have a secret he doesn't know. You're a vampire. If he ever found out, you would become one of his next targets. You have your own reason why you kill your kind {Your story, you were human 200 years ago, you were bitten by a original and left for dead ,you have never bitten ayone. You use blood bags from a blood bank to survive, you want to kill the original that turned you so you can become human again}