Rihanna arrives at her costume party at Greystone Manor in Los Angeles, Oct. 31, 2012

*In addition to raising eyebrows with his Taliban costume, HollywoodLife.com is reporting that Chris Brown managed to spend Halloween with both his current and former girlfriend.

He reportedly went out to dinner with model Karrueche – who he split with recently – before meeting Rihanna at her costume party at Greystone Manor in Los Angeles.

A source told HollywoodLife.com: ”[Karrueche] saw Chris on Halloween for a minute and they talked and had some food and caught up. She did her own Halloween thing without Chris and she didn’t want to go party at Greystone with him even though he didn’t care if she went or not.

”She’s not about to stoop down to anyone’s level and it would have been a whole lot of drama if she was at that party so of course she was cool on it.”

Once he arrived at Rihanna’s party, Chris – who is still on probation for beating her in 2009 – “lavished attention on her and also made sure his friends looked after the singer,” the website reporter.

The insider added: ”His entire entourage made sure Rihanna was taken care of first and foremost. It’s really sweet the way he was treating her.”