What great love/vampire-ish reads do you recommend for the summer?

So, I am looking for a great book to read over the summer. I want the book to be long. I am thinking of borrowing from the Library or just buying it. It depends if the description of the book itself interests me and gets me all dolled up just by reading it.

The book/s that I would like to read could be series or just a huge book. The genres that I enjoy reading have mostly to do with love, lust, vampires, and even more love. Also it has to be about teenagers not old people. no offense