Blue Bloods (Blue Bloods, Book 1) by Melissa De La Cruz
I enjoyed this book! I've heard such great things about this series, so I've picked up the next book in the series and I plan to read it soon.
This is an interesting take on the vampire book. Blue Bloods are vampires, and live a very exclusive, high-society life. The main character, Schuyler, is a vampire, but is different - which was briefly touched on in this book and I'm assuming will play a much stronger role in the rest of the series.