It's a well known fact that Justin Bieber and Taylor Swift aren't the best of friends, especially when it comes to Selena Gomez, but is he going to air his thoughts via his new music?

According to Hollywoodlife.com, a source has revealed that Biebs is going to take a leaf out of T-Swift's book and pen a song aimed at her.

“He has worked on songs hitting back at all his critics,” a source told the site of his new music. “There was even buzz that he was writing a diss song vaguely about Taylor Swift.”

Ooh, will this be Shake It Off version 2.0?!

Justin and Taylor have never really seen eye to eye, remember that time T-Swizzle stuck her tongue out at Justin and Selena's PDA a couple of years ago?!

It's also rumoured that Taylor was keen for Selena to stay far away from Justin during their roller coaster relationship.

“His relationship with Selena helped Justin write. He channeled everything in his life into his music. He wont say, but Selena may want to prepare herself for a couple songs about her and their relationship,” a sourcetoldHollywoodLife.com.