Amber Rose has moved from twerking on the floor to twerking on Chris Brown

The model and the singer were both at Supper Club in Los Angeles on Thursday, where Rose took the Juvenile song “Back That Azz Up” quite literally. Photos and video captured by witnesses show her grinding her booty right up against Brown. And he’s seems like quite the willing participant.

Neither star has made mention of their sexy interaction on social media. Rose attended the first-ever People Magazine Awards earlier in the night. Prior to both events, she and pal Blac Chyna set the Internet afire with a joint twerking video. The Instagram clip featured the friends down on the floor as they popped their booties up. Rose claimed to simply be demonstrating how they “keep our asses firm and tight,” and even shared a slow-motion butt video in case anyone needed further, uh, instruction.

Brown is fresh off yet another split with on-and-off girlfriend Karrueche Tran. They traded dueling Instagram messages earlier this month, in which she blamed their breakup on his alleged mistreatment on her, while he claimed she cheated with Drake and had been using him throughout their relationship. Since then, Brown seems to be enjoying the single life once more.

As for Rose, she and husband Wiz Khalifa had a nasty separation earlier this year, though things became amicable by the time the her birthday came around in late October. Rose, who has a 22-month-old son with the rapper, has also been linked to Nick Simmons and French Montana’s brother Zack. On Thursday night, however, she was very much linked to Brown. 

Watch Amber back that thang up on Chris Brown below!