Chris Brown buys Rihanna expensive gifts for her birthday to try to make up for beating her half to death.

Jewelry means nothing. Get some counseling, apologize and donate some quality time to battered woman causes. Then and only then will CB have a shot a redemption......

But - despite facing possible jail time over the alleged attack - the Run It star appears not to have given up on their relationship, and saw fit to buy Rihanna a diamond bracelet and necklace and made an emotional phone call to ask for forgiveness, reports the New York Daily News.

A source tells the publication, "Chris called Rihanna to wish her a happy birthday.

"He's absolutely trying to get back into her good graces. He knows he's very much in the doghouse right now, and is doing everything he can to show her how sorry he is."

And Rihanna is reportedly finding it difficult to turn her back on the relationship.

The insider adds, "Rihanna so wanted Chris with her on her big day, but obviously realises why they can't be together right now. But it's becoming more and more clear that she can't be without him."

Rihanna spoke out about the incident for the first time at the weekend, thanking her fans for "the outpouring of support she has received during this difficult time".