Acheron by Sherrilyn Kenyon

The god of final fate and the leader of the Dark-Hunters, Acheron Parthenopaeus is used to being in charge... at least in this lifetime.
He answers to no one and no one questions him. Yeah, right.
Enter a woman on a forbidden quest out to answer an ancient mystery who won't take no for an answer. Not even from Acheron himself.

In spite of his impugning her reputation and foiling her attempts at every step of the way, she will not be denied.But when ancient guardians and old enemies threaten them, the only hope they have is to stand together or be destroyed individually. The only problem is Acheron isn't sure he can trust anyone with his past, but as the Fates have foretold, in your past lies your future. The time for truth is at hand...

New Moon by Stephenie Meyer

I FELT LIKE I WAS TRAPPED IN ONE OF THOSE TERRIFYING NIGHTMARES…For Bella Swan, there is one thing more important than life itself: Edward Cullen. But being in love with a vampire is even more dangerous than Bella ever could have imagined. Edward has already rescued Bella from the clutches of one evil vampire, but now, as their daring relationship threatens all that is near and dear to them, they realize their troubles may be just beginning. . . .