Singer Chris Brown faces two felony counts, making criminal threats and assault, and up to five years in prison for the alleged beating of his girlfriend Rihanna.

The just-released affidavit and search warrant contain explosive allegations of the attack-blow by-blow.

Rihanna told police Brown repeatedly hit her in the face, choked her to a point near unconsciousness, and threatened to kill her. 

Their heated argument began in a rented Lamborghini after a jealous Rihanna read a three-page text message that had been sent to Brown from a former lover.

Brown tried to push Rihanna out of the moving car, but couldn't because her seat belt was on, says the affidavit.

He then allegedly shoved her head against the passenger window and punched her repeatedly, causing her "mouth to fill with blood and blood to splatter all over her clothing and the interior of the vehicle."

The now-infamous police photo shows the extent of the damage to Rihanna's swollen and bloody face.

Brown allegedly yelled: "I'm going to beat the **** out of you when we get home!  You wait and see!"

When Rihanna pretended to call to her assistant to get the cops, the affidavit says Brown looked at her and said: "You just did the stupidest thing ever!  Now, I'm really going to kill you!"

He then allegedly "placed her in a headlock," "bit her on her left ear," and as "she began to lose consciousness...Brown bit her left ring and middle fingers," according to the statement.

Despite these shocking new details, Rihanna reconciled with Brown last weekend.  

Meanwhile, Tanya Brown, sister of the late Nicole Brown Simpson, is sharing her sympathy for Rihanna.  O.J. Simpson was found not guilty of murdering Nicole Brown Simpson in 1994.

"There are so many 'Nicoles' and 'Rihannas' that are happening out there.  It doesn't get better unless you reach out for help," says Brown, who now counsels battered women.

Brown continues, "I don't want any more 'Nicoles' happening.  And it can happen unless she puts a stop to it, and I would say that to anybody.  Rihanna and Nicole are only the famous ones."