P Diddy has denied reports he is dating his R&B protégé Cassie.

The 38-year-old rap mogul was rumoured to have hooked up with the 21-year-old singer, who is signed to his Bad Boy record label.

A source told PageSix.com: "She recently broke up with her boyfriend, and they're in Miami together now. They're holed up together in Miami, very low-key.

“He's really in love with her."

However, Diddy insists the rumours are false, telling blogger Perez Hilton, "I am still single and am not in love with anyone."

Diddy's publicist confirms the star is in Miami, but denies any favouritism.