Because she was dancing with others guys while Chris Brown was staring at her and then when they got in the car Rihanna and him started to argue and then she was all like "f--- you!' and Chris Brown totaly lost it.
ok i don't wanna turn wikianswers into a gossip site but i heard that it was because she gave him herpes...
that is so true but who knows right!
Chris Brown is over Rihanna.
Chris Brown want pompom
She cheated on Chris Brown with Drake the sexy rapper
i heard chris brown hit her because rihanna was abusive, didnt let him breathe and rihanna hit chris first.but chris brown does have a problem with his anger
Chris Brown beat her up.
Rihanna does not have a baby by Chris Brown or by anybody.
In 2010 Chris Brown is 21 and Rihanna is 22.
rihanna and chris brown did get into a fightyes
Chris Brown and Rihanna went out in 2008.
No, Chris Brown does not like Rihanna anymore.
Chris Brown is over Rihanna.
Rihanna does not have a baby and neither does Chris Brown.
No Chris Brown did not have a kid by Rihanna or anybody.
Chris Brown want pompom
NAHH!! he did more than slap her he slapped punched kicked uppercutted and through her lol no joke he like totaled her face:)
She cheated on Chris Brown with Drake the sexy rapper
Chris Brown and Rihanna are broken up now.