Cain's Identity - Scanguards Vampires #9

Scanguards bodyguard Cain struggles with amnesia; however, the curtain to his past finally begins to lift when a mysterious stranger appears, revealing that Cain was the victim of an assassination attempt. Cain finds out that not only is he a powerful vampire king, he's also engaged to Faye Duvall, the female vampire who's been haunting his dreams.

When Faye thinks Cain is dead, she's devastated and can only keep going