Leonardo DiCaprio thinks Rihanna is "incredibly hot," but friends say they are just having fun together.
A source said: "He thinks she's incredibly hot. Like him, she's not looking for a relationship!"
The 26-year-old singer was also recently linked to the 'Wolf of Wall Street' star's good friend Richie Akiva, but another insider insists she spent Valentine's Day with Leonardo last weekend.
The rumoured couple were spotted partying at Manhattan hotspots 1 OAK and Up & Down last Friday (13.02.15), and went to Paul McCartney's secret concert in the city together the following day.
An eyewitness told Us Weekly: "They were whispering and staring into each other's eyes."
The duo stayed close during the gig before slipping out together before it ended.
Rihanna and Leonardo have been friends for many years.
They were first spotted partying at a villa in Los Angeles in May 2009 and were also seen flirting at the Coachella Valley Music & Arts Festival in Indio, California in 2011.