Rihanna's "non-stop partying" is reportedly an effort to impress Chris Brown.

The Barbados-born singer has been at the centre of a love conundrum lately, following claims she reunited with her ex-boyfriend Chris. They split in 2009 after he assaulted her.

It's now thought the pair aren't dating, although it has been widely reported that Rihanna was left devastated when Chris decided to continue his relationship with his current girlfriend Karrueche Tran.

"All this crazy behaviour, the non-stop partying and going out semi-naked, it because of Chris. It's to try to get his attention. Who knows what she'll do next?" a source told the British edition of Grazia magazine.

Rihanna and Chris recently collaborated on two tracks and have been spotted at the same nightclubs.

It's thought Chris had second thoughts about their relationship as there was such widespread disapproval of them reigniting things.

"Rihanna's world came crashing down when Chris told her he was staying with Karrueche," an insider explained. "It was a huge blow to her heart and ego and has sent her into a dark place. Everyone is worried; she's been partying non-stop ever since."