Passion unleashed - Larissa Ione

WRAITH, a vampire with a tortured past, is wild, strikingly attractive, and the most skilled fighter in both the human and demon realms...and he's dying. Given only weeks to live, he has only two options: seduce a human woman
inorder to take possession of her invulnerability charm...or die.

SERENA is a treasure hunter and has lived a charmed life - literally.
At the age of six, a fatal disease nearly killed Serena, until her mother passed down her charm to Serena, making her immune to injury and death.
But there is a price: she will loose her charm to the one she is intimate with.
Worse, with the charm no longer keeping her disease in check, she will die.

But as she starts to fall for the young and dying Wraith, she realizes her own loneliness, and starts to wonder if living forever is worth the price.