What really happened leading up to Sunday’s shocking incident between Rihanna and Chris Brown? According to TMZ sources, the argument that allegedly led to her being badly beaten — to the point where she could barely open her swollen eyes for police photographs — was sparked by a text message Chris got from a woman who wanted to meet up with him later.

But the text message may just have been the breaking point, as multiple reports say the couple had hit a rough patch. One partygoer says the R&B singers had a public argument at an event Friday night.