(CNN) -- Singer Rihanna, through her lawyer, asked a judge Thursday not to prohibit her boyfriend, singer Chris Brown, from having contact with her while he faces felony charges of assaulting her.



Chris Brown attends his arraignment in Los Angeles on Thursday. Attorney Mark Geragos is at right.



The judge granted Rihanna's request.



Brown, 19, allegedly attacked Rihanna, 21, during an argument in February that began when she found a text message from another woman on his cell phone, according to a sworn police statement.



Brown appeared before a judge Thursday on the two felony counts, but his arraignment was delayed until next month at the request of his lawyer.



Authorities charged Brown on Thursday with felony counts of assault and making criminal threats, the Los Angeles County, California, District Attorney's Office said. If he is convicted, the sentence could range from probation to four years and eight months in prison, the office said.



While Los Angeles County Judge Kristi Lousteau warned Brown "not to annoy, harass, molest, threaten or use force or violence against anyone," Lousteau did not issue a "no contact" order that would have kept Brown away from the woman he is accused of beating.  Watch a discussion of the charges -- and Brown's future »



Rihanna's lawyer, Donald Etra, stood near Brown and his lawyer, Mark Geragos, during the brief hearing. Rihanna was not in the courtroom.



Referring to the "no contact" order that could have been imposed, Etra told reporters after the hearing, "Rihanna requested that no such order be issued."



Etra said the less stringent protective order against harassment and threats signed by Lousteau was "more than sufficient in this case." Etra did not respond when reporters asked if the singer was cooperating with prosecutors in the case against Brown.



Brown, dressed in a suit and tie, said little during the hearing, except to answer "yes" when the judge asked him if he wished to waive his right to a speedy trial in exchange for a delay in arraignment. He then signed a waiver, which also allows Geragos to appear without him in court for hearings on routine issues.



Lousteau ordered Brown to return to court on April 6 for formal arraignment.



Court documents released Thursday revealed details about the case against Brown, including a police statement that the incident began when Rihanna, whose full name is Robyn Rihanna Fenty, found a text message on Brown's cell phone from "a woman who Brown had a previous sexual relationship with."   Watch panelists discuss whether Rihanna will testify »



A search warrant used by police to obtain cell phone records related to the case included the sworn statement by Los Angeles Police Detective DeShon Andrews in which he detailed what allegedly happened in the early morning hours of February 8. Read the affidavit (PDF)



"Brown was driving a vehicle with Robyn F. as the front passenger on an unknown street in Los Angeles. Robyn F. picked up Brown's cellular phone and observed a three-page text message from a woman who Brown had a previous sexual relationship with.



"A verbal argument ensued and Brown pulled the vehicle over on an unknown street, reached over Robyn F. with his right hand, opened the car door and attempted to force her out. Brown was unable to force Robyn F. out of the vehicle because she was wearing a seat belt. When he could not force her to exit, he took his right hand and shoved her head against he passenger window of the vehicle, causing an approximate one-inch raised circular contusion.



"Robyn F. turned to face Brown and he punched her in the left eye with his right hand. He then drove away in the vehicle and continued to punch her in the face with his right hand while steering the vehicle with his left hand. The assault caused Robyn F.'s mouth to fill with blood and blood to splatter all over her clothing and the interior of the vehicle.



"Brown looked at Robyn F. and stated, 'I'm going to beat the s--t out of you when we get
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