Selena Gomez Sneaks Into Justin Bieber's Trailer at the American Music Awards (EXCLUSIVE)

Selena Gomez supported Justin Bieber backstage at the American Music Awards in LA on Nov. 18

Selena Gomez supported Justin Bieber backstage at the American Music Awards in LA on Nov. 18

Splash

Justin Bieber and Selena Gomez may have been through a rough patch — but she still made sure to be there to support him on his big night.

Life & Style can exclusively reveal that the 20-year-old songstress was spotted sneaking into the Biebs' trailer at the American Music Awards.

"Selena didn't walk the carpet or arrive at the venue with Justin,” says an eyewitness, “but after the show I saw Justin's mom, Pattie, come out of his trailer. About five minutes later, Selena walked out."

"She was dressed down, wearing a gray hoodie," the eyewitness adds. "She had to have been in Justin’s trailer for at least an hour.

NEWS: Justin Bieber and Selena Gomez breakup: A week of reunions, events and heartache

Though Justin and Selena spent time together, they weren't in the best of spirits.

"Selena looked like she didn’t want to be bothered and went to leave while Justin followed behind her," the eyewitness shares.

While the 18-year-old teen sensation won all three of the awards he was nominated for, including Artist of the Year, the eyewitness notes he didn't seem to be in a good mood following the show — and neither did Selena.

"They did not talk to each other when they all left," the onlooker says. "They were completely quiet with a few bodyguards. Justin was wearing the outfit he wore during his performance, with a black hat. Selena left with Justin and his mom."

But the on-again-off-again couple seemed to want people to know that they're an item once again.

"They entered an elevator holding hands," the eyewitness tells Life & Style, with a second onlooker saying, "They got into the same bus to leave."

More than a week ago, the duo ended their relationship. But as Life & Style first reported the pair reunited in NYC on Nov. 11. Three days later, they met up in LA. Though they took in a comedy show, the duo didn't share any laughs on Friday night when Justin was photographed trying to seek entry into Selena's home after they seemed to have had a dispute.

EXCLUSIVE: Justin Bieber and Selena Gomez reunite at NYC hotel post-breakup

Ah, young love. It sure makes some people do the craziest things!

For more on Justin and Selena’s relationship, pick up this week’s issue of Life & Style Weekly, on newsstands tomorrow!

Keep up with your fave celebs in the pages of Life & Style by subscribing now!