Crave Series by Laura J. Burns, Melinda Metz

Shay could never do the things her friends could--never try out for sports, never go to parties, never fall in love. Because of the mysterious and incurable blood disorder she was born with, she can barely make it through three days of school a week. But now, her doctor-turned-stepfather has a brand-new treatment that he thinks will change everything. And it does. As soon as the new blood starts pumping into Shay's veins, she has visions of a different life...Gabriel's life... moreShay could never do the things her friends could--never try out for sports, never go to parties, never fall in love. Because of the mysterious and incurable blood disorder she was born with, she can barely make it through three days of school a week. But now, her doctor-turned-stepfather has a brand-new treatment that he thinks will change everything. And it does. As soon as the new blood starts pumping into Shay's veins, she has visions of a different life...Gabriel's life. She sees an orphanage, loss, fangs, blood, and lust that she can't explain. Is Gabriel real? And if he is, could he really be what she thinks he is? less

Gabriel and Shay are convinced that they can make their relationship work. Knowing that Shay is half-vampire, Gabriel thinks that his coven will embrace her as one of their own, but instead they view her as an abomination, a thing that doesn’t belong in either world. And they want her dead. Now Gabriel must make the ultimate decision - watch his love be killed by his coven or defy the people closest to him, the people he has spent centuries with to save her.