Chris Brown trying to woo Rihanna back

Is Chris Browning trying to woo Rihanna back. Source report that Chris Called Rihanna to wish her happy birthday. Chris tried to say he is sorry with a diamond necklace and bracelet.( don't take him back I tell, it will happen again) It was also reported that Chris mom sent Rihanna flowers( Oh nice)

Rihanna seemed happy at her party(well its a party , and Chris is not there "duh")