Rihanna's got a steamy new collaboration! Though one source told Us Weekly the singer, 23, appeared to blow off Ryan Phillippe, 36, at a Gucci/Roc Nation brunch in L.A. on Feb. 12, a second insider says it was actually just the opposite -- and that the two had a sleepover that very night!
"She thinks he's hot," says the source. "They totally had sex. And it wasn't even the first time!"
"They initially hooked up when things were strained with [Rihanna's ex] Matt Kemp back in early December," says a Rihanna source. Phillippe (whose three-month, nonexclusive romance with Amanda Seyfried recently fizzled) and Rihanna then reconnected at Bing's Two Kings charity event Feb. 19 -- though again, they played it cool.
"There was no PDA," says an attendee of the Los Angeles party. The next day, he went to her 23rd birthday party at a Beverly Hills home. Says an onlooker, "They hung out a bit, but were discreet. It is still very casual." Sums up another source, "Clearly they're keeping it on the downlow!"