The Hardest Thing (re-writing)

Rebecca and Nick have been best friends since birth. Rebecca is a Vampire/Werewolf hybrid. Nick is a werewolf. The vampires and werewolves made peace and live together in the same communities. They no longer fight. When Nick meets his mate. He's torn between his mate and best friend. She moves to live with her grandparents. Comes home a month later to visit her parents. She found her mate. His name is Slade D'angelo. He's Vampire/Angel. And they say Angels are the most beautiful creatures ever. Even more than a werewolf. But he rejected her so she comes home.