The singer reportedly flew across the country and showed up unannounced to Sel's b-day bash in Los Angeles over the weekend.
The Biebs arrived at the celebration in his famous, leopard print car with his pal Jaden Smith. He was pictured walking into the party with a single rose in his hand...aww!
Justin was also spotted getting his PDA on, kissing and rubbing, with Sel inside. Several insiders at the party said the two singers looked happy and were having fun with each other. They even reportedly left together!
All of this comes after Justin didn't wish Selena a "happy birthday" on Twitter or even seem to acknowledge her big day at all. There were reports he got her absolutely nothing too!
We aren't sure if Justin had some bling in his pocket at her party or what, but he reportedly showed up with nothing but a rose in his hand! Maybe she got her gift after the party?
Are you surprised Bieber showed up to Selena's birthday party? Even though she insists she's single, do you think Jelena is really back on?
Gallery | The Selena and Bieber Romance