Twilight by Stephenie Meyer

About three things I was absolutely positive.

First, Edward was a vampire.

Second, there was a part of him—and I didn't know how dominant that part might be—that thirsted for my blood.

And third, I was unconditionally and irrevocably in love with him.

In the first book of the Twilight Saga, internationally bestselling author Stephenie Meyer introduces Bella Swan and Edward Cullen, a pair of star-crossed lovers whose forbidden relationship ripens against the backdrop of small-town suspicion and a mysterious coven of vampires. This is a love story with bite.