Showbiz Spy reports: The pair are said to have had a falling out at the Grammy Awards when Chris caught his girlfriend texting her ex, rapper Drake, with whom he had a violent brawl in New York’s W.i.P club last June.
“Chris and Rihanna had a big bust-up at the Grammys over Drake. She was messaging him and Chris saw and it didn’t go down well,” a source said.
“Since that night they have barely spoken and have been doing their own things. For now they have split up but they will probably make up at some point.”
The couple were snapped looking unhappy as they left the big event and sat at opposite ends of Los Angeles’ Playhouse Nightclub last week.
The 24-year-old beauty refused to sit anywhere near her beau – who is still on probation for assaulting her in 2009 – despite confirming the pair were once again an item last month.