EXCLUSIVE: Is it already over between chris brown and rihanna?

Is it on or off? Chris Brown and Rihanna arrive separately at the Playhouse Nightclub on Wednesday in Los Angeles; the on-again off-again couple ignored each other all night, a source exclusively told MailOnline

At the Grammys on Sunday they couldn't have looked happier.

But just days later Chris Brown and Rihanna's romance appears to have soured.

A source told MailOnline exclusively that the couple refused to acknowledge one another after both arriving at the Playhouse Nightclub in Los Angeles on Wednesday night.

Rihanna didn't know that Chris was expected at the same event, revealed the source. 

When VIP hosts asked the Barbadian pop star if she would like to be seated with her boyfriend, she declined and demanded to be put somewhere else.

'Rihanna refused to sit with or even near Chris – and when Chris noticed she was there, he made a huge show of rubbing his presence in her face,' said the source.

'He promptly ordered three more bottles of ace of spades which came out with in a procession of sparklers and scantily clad cocktail waitresses, causing a spectacle, which he clearly wanted Rihanna to see.'

The music superstars had arrived separately at the Popular Demand’s 1 Year Anniversary event, and left without each other at the end of the night.