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"Rihanna and Chris Brown reportedly split up at the Grammys. The controversial couple argued over the &amp;#039;Umbrella&amp;#039; singer&amp;#039;s texts to ex-boyfriend Drake, according to The Sun.  The pair were seen looking unhappy while leaving the awards event, later taking up places at opposite ends of an after-party nightclub. &amp;quot;Chris and Rihanna had a big bust-up at the Grammys over Drake,&amp;quot; a source told the paper. &amp;quot;She was messaging him and Chris saw and it didn&amp;#039;t go down well. &amp;quot;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.&amp;quot; The Bajan singer was believed to be wearing an engagement ring at the Grammys given to her by the rapper. Rihanna recently sustained a minor knee injury after being accosted by a stranger as she left a London nightclub. 2013 Grammy Awards - Best and worst dressed:  "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.digitalspy.com/showbiz/news/a459860/rihanna-chris-brown-split-at-grammys/>