Jimmy Fallon and Justin Timberlake are obviously BFF's, but their 'Single Ladies' routine at the US Open pretty much solidified the status.

The bromance is real with these two, and the rest of us just get to sit back and enjoy.

JT was also on Fallon's show as he kicked off the new season, and the two managed to drink some Tequila and explore the History of Rap part 6.

And of course the Tequila.