WATCH: Justin Bieber Serenades Selena Gomez! Are They Back Together? Did They Ever Break Up?

The on again/off again couple were spotted last night in at the Montage Beverly Hills Hotel, sparking rumours that the two are getting back together. 

Photographer Lindsey Cavanaugh of Eat Pray Photo caught the two and told Cosmopolitan about what she saw,

“Justin was playing ‘Sorry’ on the piano before he walked over and sat down at the table where my friends and I were sitting. He was talking to us about life and music — he was so down to earth and such a nice guy — and then Selena came. When she got there they looked so happy to see each other. They talked for a little bit, and then he sang ‘My Girl’ to her. It was amazing.”

When you're having a drink at an empty hotel bar and @justinbieber appears out of nowhere and begins to sing on the piano. #LOSINGMYSHIT

A video posted by l?ndsey (@eatprayphoto) on Nov 20, 2015 at 7:35pm PST

@justinbieber singing my girl to @selenagomez….is this real? Pure magic.

A video posted by l?ndsey (@eatprayphoto) on Nov 20, 2015 at 9:17pm PST

Does anyone have a drool cloth I can borrow? @justinbieber @selenagomez

A video posted by l?ndsey (@eatprayphoto) on Nov 21, 2015 at 8:35am PST

Justin and Selena are both scheduled to perform tomorrow night at the 2015 American Music Awards which will be hosted by Jennifer Lopez; Justin will close out the show.