More details are surfacing about what sparked the incident between Rihanna and Chris Brown. TMZ reports that it was allegedly 40-year-old Tina Davis, Brown's producer and manager, who sent the text messages that caused the singer to become enraged the night of the Grammy Awards. Los Angeles cops said the messages were from "a woman Brown had a previous sexual relationship with." According to E! News, the couple is in a Santa Monica studio recording a duet. Meanwhile, in a potentially awkward upcoming moment, Chris Brown is still nominated for the Favorite Male Singer award at Nickelodeon's Kid's Choice Awards, set to air March 28.