The Awakening by L J Smith

Elena is queen bee at her school and the one boy she wants is the one who seems to not be interested. She wants the new boy at school, Stefan Salvatore. He's mysterious and very attractive. After some time, Elena finds out that the reason Stefan ignored her was because she reminded him of someone and because he liked her so much. Everything seems to be going perfect until Stefan's brother Damon comes to town. Damon is out to get back at Stefan and the one thing he wants is Elena. When Stefan goes missing, Elena knows that there is only one person who would know where he is...Damon.