In a cover story in the mag's March 2 issue, a source close to Brown noted that the two stars, 19 and 20, respectively, are still young. Rihanna turns 21 on Friday.
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"They're both kids, really immature," the source said.
On February 8, the night before the Grammys, Brown allegedly bit and hit Rihanna, who was hospitalized at Cedars-Sinai Medical Center for her injuries. Detectives are currently investigating the incident.
Rihanna's father, Ronald Fenty, told People that the alleged assault was the first time he had heard the relationship turned violent.
"I didn't know of any previous beatings," he said.
But a source close to the couple said that "jealousy" was at the heart of their argument, while another told the mag the singer been in "compromising situations" during a trip to Europe.
"Jealousy. That's usually what causes their arguments," the first source said.
Whatever the reason, Rihanna's family is hoping that there won't be any more.
"I don't want her to go back to him," one relative said. "I don't think anyone does."
Related Content from AccessHollywood.com:
PLAY IT NOW: T.G.I.F. Is Rihanna Appalled By Chris Brown Statement? (Feb. 17, 2009)
PLAY IT NOW: Chris Brown Breaks His Silence