Rihanna And Chris Brown's Grammy Awards 2013 Bust-Up Blamed On Text To Drake?

The 'Diamonds' star is believed to have been spotted by the R&B star sending a text to the Canadian rapper.

Rihanna and Chris Brown have reportedly cooled their newly rekindled relationship after a bust-up at the Grammys after the 'We Found Love' star allegedly sent a text to Drake.

The 'Where Have You Been' singer, who previously dated the Canadian rapper, is said to have angered R&B star Chris after he spotted her texting the 'Take Care' rapper during the Grammy Awards 2013 two weeks ago (10th February).

"Chris and Rihanna had a big bust-up at the Grammys over Drake," a source revealed to The Sun this week. "She was messaging him and Chris saw and it didn't go down well.

"Since that night they have barely spoken and have been doing their own things," they continued. "For now they have split up but they will probably make up at some point."

In the week after the Grammys both stars were said to have attended the same Hollywood nightclub but stayed on opposite sides of the venue and allegedly did not speak to each other over the course of the night.

Check out a picture of Chris Brown and Rihanna relaxing together at the Grammy Awards 2013 earlier this month below (Credit: Getty):

Chris Brown and Drake were reported to have been involved in an altercation in a New York City nightclub back in 2012, believed to have been about 'Diamonds' singer Rihanna.

Rihanna was back in the UK this past weekend to launch her River Island collection at London Fashion Week, which hits stores from 5th March.