OH MY GOD. Can you imagine!? It would literally break the internet!
US Weekly did a whole breakdown on why rumors are swirling that they are going to do a song together. Basically it starts with Britney said she wanted to do a song with Justin, then Justin saying, yeah, let's go, and then they were BOTH spotted with Timberland AND Timberland went on a liking spree and started liking pics of the former couple fans posted on social media!!