Justin Bieber serenades Selena Gomez in hotel bar

Justin Bieber serenaded his ex-girlfriend Selena Gomez at a hotel bar in Beverly Hills, California, according to videos posted on social media.

In a series of clips uploaded to Instagram.com over the weekend (21-22Nov15), Justin is shown singing at a piano in the bar of the Montage Beverly Hills hotel.

He appears to serenade his on/off girlfriend Selena with The Temptations' hit My Girl as she looks on smiling, while the rest of the revelers in the bar cheer.

Justin and Selena are both set to perform at the American Music Awards on Sunday (22Nov15), and fans are now speculating that the former couple could even take to the stage together to sing a duet.

The Baby star recently told Access Hollywood that he is not over the romance, revealing, "I don't know if I'm over it yet. I think that I'm definitely in another place, and I think we've definitely went our separate ways. I love her and I want her to be awesome, but there are things that remind me of her."

Selena told Billboard that she is proud of her ex-boyfriend's recent chart comeback, adding, "I'm proud of him... This is what I always saw in him, why I always believed in him."