Ariana Grande and Cynthia Erivo's emotional bond has been one of the unexpected stars of the "Wicked" movies. From their many cringeworthy moments together on the press tour to their matching "Wicked" tattoos , it's clear that the duo has gotten closer than most costars do. Yet, inside sources say this friendship may not be for good, after all.

The relationship between Elphaba and Glinda is one of the most important parts of "Wicked." And Erivo and Grande seem to have struck up a friendship offscreen that is just as powerful as the one onscreen. Like Elphaba and Glinda's friendship, though, life may get in the way of Erivo and Grande's bond. And according to what one source told the Daily Mail , they may already be drifting apart."They text and have phone calls all of the time, bu

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