Can someone please help me with the name of this book?

Question

I remember a lot of the story but I can't remember the title or author.
It's a sci-fi/fantasy type book. There's this village which brings girls to this castle for the vampire type person who lives there to eat. The girl figures out that the vampire use to be a human and can still become a human again so she tries to find a way to turn him back. She's, like, number 7 or 13 and if he gets the lifeforce/blood (or whatever he needs) of a certain number of girls then something will happen (forgot what).
She ends up turning him human again and they fall in love. There's some kind of adventure they go on (maybe he runs away and she finds him?) and she saves his life. But he is scared of her because (I think) she has blue eyes and he thinks she can see through him and knows all his deep thoughts and also by the fact she knew what he had been. (I think) he had a fiancee before he turned and they end up meeting up with her. At the end of the book, she leaves to become maybe a priestess.

Answer 1

Your book sounds similar to The Darkangel, by Meredith Ann Pierce, Well, actually, it sounds similar to the Darkangel trilogy, which contains most of what you mentioned. However, there are some things in your description which don't match up with the books, so I suggest you check for yourself.