Justin Bieber’s Biggest Moments at Billboard Music Awards

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He takes home six trophies and locks lips with girlfriend Selena Gomez.

Justin Bieber had quite the night Sunday at the Billboard Music Awards. Below, his three biggest highlights:

1. He won six awards!
Bieber took home six awards, including Digital Artist of the Year, Top New Artist and Fan Favorite. But he was so jet-lagged he forgot about his wins. On his Twitter page, he wrote that he must have gone "crazy" after traveling from Japan to Las Vegas for the show because he thought he had only scored three trophies: "For once waking up because of jet lag is great....because i just found out... "we won 6 AWARDS 2nite!! I THOUGHT IT WAS 3!!! CRAZY!! I have the GREATESTFANSINTHEWORLD !!! THANK U!!! I LOVE U I LOVE U I LOVE U!! SWAG (sic)"

2. He locked lips with girlfriend Selena Gomez - on camera!
After being named Top New Artist, he kissed his lady, marking the first time they've showed off PDA in front of the cameras. Though he didn't mention Gomez by name in his speech, Aceshowbiz.com reports Bieber called her "amazing" in the press room.

3. He mingled with Hollywood's A-list.
Bieber was photographed with everyone from Jay Z to Taylor Swift. Even though he rubbed elbows with some of the music world's most elite, he hasn't forgotten his roots. While accepting one of his awards, he thanked his fans, his family, his talent manager, Usher, and "basically everyone who helped me get out of my hometown and live my dream."