Pop star Rihanna and rapper Nicki Minaj can't seem to decide whether or not they're "sex partners."

Last month, Minaj called Rihanna the "best fondler ever". This month, the two sexy stars were caught playfully bantering about "their crib" and "hooking up" on Twitter. Now people are gossiping about the possibility of a relationship behind closed doors.

Ryan Seacrest asked Minaj what's up, and she blew the rumors off as ridiculous.

"I don't know where people got this really insane, hilarious, random rumor that [Rihanna] and I were living together," Minaj told Seacrest on his morning show. 'We're not getting cozy. I mean, we're not getting cozy yet."

But when questioned by paparazzi, Rihanna only stoked the fire again. A member of the crowd shouted “You’re not really roommates with Nicki Minaj are you?” and Rihanna yelled back, "No, we're just sex partners!"

Are they? Aren't they? Are they? Aren't they? We just don't know. And they really aren't telling, are they?