GIF: Taylor Swift Caught Making "Ew" Face About Selena and Justin's Backstage PDA

In what appears to be a candid moment caught on tape, watch Taylor Swift stick out her tongue in response to seeing her good friend Selena Gomez getting cozy with Justin Bieber backstage at the Billboard Music Awards in Las Vegas this evening. Selena and Justin reportedly reunited in Vegas before the show and while they weren't shown sitting together at the event, they were caught in this sweet embrace backstage. So check out the GIF and tell us what you think. Was Taylor Swift caught making an ...