But what REALLY happened? And who was that unfortunate woman?Putting speculation aside for a moment – the only known FACTS in the case seem to be these:

The woman is 20-year-old Robyn Rihanna Fenty, – AKA Rihanna – also a popular R&B singer.

An altercation occurred inside Brown’s parked Lamborghini following a party at record producer Clive Davis’ house. The police were called.
Rihanna was taken to the hospital.
Brown fled the scene without his Lambo.
Brown later turned himself in to authorities.

Now back to speculation – the Hollywood media and entertainment rumor mills are putting out the story that:

Brown & Rihanna had a fight in the car – she grabbed his car keys and threw them into the bushes – sending Brown into a rage and he then choked, beat and bit his girlfriend – before fleeing the scene.There is some thought that Rihanna does not want to press charges against Brown – since she is not assisting investigators in their criminal case against Brown – but that probably won’t matter much because the Los Angeles District Attorney is pressing his own charges in the case.Police reports show that Rihanna identified Chris Brown as the man who assaulted her at the scene and the police have physical evidence in the form of Rihanna’s face and arm were severely bruised in the incident.
Now some real speculation – 4 totally unconfirmed rumors as to WHY the fight happened in the first place:

Leona Lewis & Jealousy
Starmagazine.com says Brown was seen flirting with and touching UK singing star Leona Lewis at the Davis party setting Rihanna up for a bad evening.
Paris Hilton & Jealousy

Okmagazine.com says that while Rihanna was performing the night before at another Grammy Week party – Paris Hilton and Brown spent some quality time together – with Paris being “all over” Brown.

Cell Phone & Jealousy
Bossip.com said Brown received a call in his car from a “particular other girl” and Rihanna recognized the number and flipped out on Brown – hitting him as they were driving.
Herpes & Rage
Anonymous Internet rumor has it that Brown flipped out on Rihanna after learning she had given him herpes – which she caught from one of Brown’s rival R&B artists.

* Interesting that all these rumors blame Rihanna as the cause of the incident – that’s a bit odd – no?