Prisoner of Fate - Twisted Fate Trilogy, #3

Lily never knew she had a thing for bad boys. She's a shifter, a virgin, the last of her kind, and she's been hiding out on a desert island for her entire life. Now that she's joined the real world she resents her responsibilities to her species: To choose the right mate and get to work repopulating the world with Light Ones who will protect all of humanity. Which is the very last thing Lily wants to do. And then she meets Matteo, a Rakshasa-those shifters who like to eat humans as snacks.
Her sworn enemy. He's been a prisoner of the Fates for a thousand years, and she has no business befriending him. Or worse, giving him her most precious commodity: her innocence. It's the shocking conclusion to the Twisted Fate Trilogy! Twisted Fate Trilogy, in reading order:Of Love & DarknessPrim and Proper FatePrisoner of Fate