Deadline: March 24th. Miss the deadline and the unthinkable happens.Cassie will turn Sweet Sixteen and Never Been Kissed. Too shy to even talk to a guy, she has no hope of pressing her mouth against one. According to her BFFs, she must change. Starting with her hair, her clothes, and her strategy. Or else. Cautious Cassie must step into the spotlight.Being a member of the un-kissed is not Cassie's only secret. She has a crush. A massive, skin tingling lust for Ryan the hottest guy in school. She's too shy to ask him out, much less offer her lips to him. Now, as her birthday looms, she must make a choice: stay in the shadows, follow her friends' lead, or go for the hot guy.