Working with My Vampire Mate

He, Lucas Agustin swore to heaven and hell to kill the vampire who killed his family.
"I don't work with vampires, the same filthy bloodsucker animals who killed my family"

She, Diana Acheron made a deal with the vampire who killed her family to not intervene in his doings and he wouldn't touch the humans but later on years alot of humans begun disappear.
"He excecuted my clan and killed mate, do you really believe that I can move on easily just like that?"

He made a huge sacrifice to his pride to work with her to kill the vampire who annihilated their love one's. Romantic feelings were bound to interfere with their fate, but she can't fall in love again yet she did unknowingly.

"do you believe in reincarnation?"

"if you believe it is true but if you don't it is not"