Bang Showbiz is reporting that 'Russian Roulette' singer Rihanna is rumored to be having a secret relationship with 'Sexyback' singer Justin Timberlake. Rihanna is said to have confided in pals about her secret love affair with Justin Timberlake. Mr. Timberlake has been getting closer with Chris Brown's ex-girlfriend since his relationship with actress Jessica Biel ran into trouble last year.

A source told Daily Star Newspaper: "She's getting close to Justin again and it's getting hot. "Rihanna called a friend and said she had a sexy little secret to share. She started laughing and said, 'Don't trip, but I have hooked up with Justin'." The source also added that Rihanna thinks her 'relationship' with Justin Timberlake was 'really good'. The source added: "She (Rihanna) said it was really good, hot and wild and that they have some of the best make out sessions she's ever experienced."

  

In related news, Justin Timberlake has been named the Most Charitable Star of 2009. The 'Sexyback' hitmaker has been named the most influential celebrity for charitable causes in a survey by US website The Daily Beast. According to reports, Justin Timberlake managed to raise more than $9 Million for his favorite charity, Shriners Hospitals for Children. Photos: Fame Pictures

Rihanna: "Hi Justin.. I'm here, you're there!"

Justin Timberlake: "Ka ching!"