The 'Umbrella' star is reportedly thinking about rekindling her romance with Chris, who is accused of assaulting her, after he bombarded her with gifts for her 21st birthday.

The 19-year-old singer sent Rihanna a host of presents including an iPod and diamond necklace and bracelet and also phoned her during her low-key party on Friday (20.02.09).

A source told the New York Daily News newspaper: "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."

Despite Rihanna's friends being against the reunion, the Barbados-born beauty is feeling lonely without Chris.

The source added: "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."

Despite her recent troubles, the 'Shut Up and Drive' singer managed to enjoy her casino-themed birthday party, held at a rented Hollywood house, and appears to be recovering from the facial injuries she sustained in the alleged attack.

The source said: "She hasn't scarred or anything. She was in a great mood. She was really celebrating not just her birthday, but life in general.

"Her theme was 'Blackjack 21' and all the guests gambled. And although there was alcohol available, Rihanna wasn't drinking."

Rihanna is now believed to be in Barbados spending time with her family.