Singers Taylor Swift and Justin Bieber are reportedly desperate to collaborate in the studio, but before doing so Swift is keen on getting a permission of her star friend Selena Gomez, who dated the "Boyfriend" hitmaker for four years.
"First of all, Taylor would never go behind Selena's back and work with Justin without first getting her blessing. If Taylor ever collaborated with Justin, it would have to be under extraordinary conditions," said a source, reports mirror.co.uk.
Meanwhile, Gomez is said to have been taking musical inspiration from Swift.