After attending the Pre-Grammy party with BF Chris Brown on Saturday night, it is now being reported that Rihanna was the mystery girl who called 911 to report that Chris had assaulted her, according to the LA Times. Rihanna has canceled the next stop on her Good Girl Gone Bad Tour in Malaysia due to the incident. Apparently, the couple has had their fair share of ups and downs recently. "One second they're all lovey dovey and then they're fighting like crazy. They're both pretty stubborn," a source tells People. Get well soon, RiRi!