Rihanna is rumoured to be having a secret romance with Justin Timberlake. She is said to have confided in friends about her "sexy little secret", revealing she has been getting closer to Timberlake since his relationship with Jessica Biel ran into trouble last year. A source told the 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'. "She said it was really good, hot and wild and that they have some of the best make out sessions she's ever experienced." However, despite her apparent connection with the Justin, Rihanna - who worked with him on the track 'Rehab' for her album 'Good Girl Gone Bad' - is not said to be interested in a relationship. The source added: "She's only out with the physical with him…and it looks like she got it."