Away Laughing on a Fast Camel by Louise Rennison

The Sex God has left the country, taking Georgia's heart with him. So she decides to display glaciosity to all boys -- a girl can only have her heart broken so many times.

Until she meets Masimo, the new singer for the Stiff Dylans. The Sex God is gone, but here comes the Dreamboat, and Georgia's away laughing on a fast camel (whatever that means).