Charlie yelled out during the song, "F*** you Justin Bieber!" which was most likely because the song is about someone looking back on their ex and their new relationship, reflecting on how it's hard to see someone you once cared about completely move on. This is something Sel can totally relate to, since you know, she dated Justin on and off for so long. However, Charlie took to Twitter to clear the air, and in the now-deleted tweets, said he was only kidding and wasn't defending Selena or calling the Biebs out in any way. It was all just a harmless joke.
So it looks like there isn't any tension between the guys, and Charlie is friends with both Justin and Selena. Case closed!
What do you think about this? Was Charlie really just joking? Sound-off in the comments and take a listen to his duet with Sel below!