Siobhan Vivian 
Not That Kind Of Girl [EPUB ebook] 

Slut or saint? Good friend or bad friend? In control or completely out of it?She’s avoided boys, always topped her class and is poised to become the first female student council president in years.But being the good girl isn’t always easy. Not when Natalie’s advice hurts more than it helps. Not when a boy she once dismissed becomes the one she can’t stop thinking about.Soon Natalie’s learning that the line between good and bad is fuzzier than she thought and crossing it could end in disaster . . . or be the best choice she’s ever made.