Forever Mine by Rozlyn Sparks

When blood is food, a jealous master controls your every move, and death comes to anyone you get close to; love is not a luxury you can afford.
Kendra Michaels has tried to follow the rules of her newfound immortal life, but can’t give up on her favorite band, Normal Paradox. She’s followed their success since they were just a small-town band playing coffee shops and local bars. She’s their number one fan and loves everything about them: their music, their lyrics, and especially their lead singer, Marcus Redmond.
He’s the perfect package, with a voice that sizzles and hot body to match. Marcus is the object of all of Kendra’s wildest fantasies, but deep down she knows she can never be Mrs. Rockstar.
For years, she’s kept watch on the band, always careful to keep her distance. Then one night she makes a tragic mistake that puts her directly in Marcus’s path.
Their encounter leaves the rockstar’s life and the band’s future hanging in the balance and only Kendra can make things right again.