That's so Raven: Step Up - Book #4: Junior Novel
Cousin Andrea, who Raven has shared a bitter rivalry with since childhood, is visiting. When best friend Eddie and Andrea start flirting, Raven has to do something-fast. So, she announces that she and Eddie are . . . gasp . . . dating! Plus, when Raven has a vision of her little brother saying he hates her, she decides to throw the best birthday party ever for him.