The beating that Chris Brown gave Rihanna on February 8, 2009, was not the first, and I'm pretty sure it won't be the last, either. From what Rihanna told the cops, her February 8 beating was the worst by far, but he had hit her plenty of times before that.
Rihanna refuses to press charges against Chris Brown, but right after the attack, she told cops that Chris Brown's violent tendencies had been escalating and that it wasn't the first time he had been violent with her.
I'm guessing that Rihanna likely needs an intervention at this point, otherwise she'll end up marrying Chris Brown and will end up in a coffin before long. I hope that her family and friends band together and pull her out of this relationship before things take a turn for the worse.
I'm guessing that Rihanna thinks she can "fix" whatever is wrong with Chris Brown, but she needs to understand that once a guy hits you and gets away with it, he won't stop. It doesn't surprise me to hear that Chris Brown had hit Rihanna before because the fact that he was so sloppy about it on February 8 just goes to show that he's gotten away with it so many times before.