Justin Bieber and Selena Gomez just can't quit each other, but it looks like Taylor Swift is ready to quit them both. Backstage at the 2013 Billboard Music Awards, when the pair were caught getting cozy, Swift was caught getting, well, disgusted.

Gomez, who was with Swift and a pal, and Bieber, who flew solo aside from his security detail, were on Billboard's backstage feed when it all went down.

Gomez approached Bieber, they exchanged pleasantries and kisses on the cheek -- and Swift made the face that will launch a thousand GIFs.

Swift's sentiments are pretty much in line with the rest of Gomez's camp, who want her far away from the 'Boyfriend' singer. Maybe because he wears sunglasses inside. (Seriously, Biebs, stop that.)