Bella Thorne says the early tension between her and Zendaya on Shake It Up did not come from a natural dislike for one another. Thorne believes people around the young actresses repeatedly encouraged them to view each other as competitors while they played best friends on the Disney Channel series. We are supposed to be best friends. We play best friends. They Slipped Away During a Disney Crossover TapingThe turning point came while Thorne and Zendaya were filming a crossover with Good Luck Charlie.