robkriri460denial.jpg Paging rumor patrol!

After pictures surfaced over the weekend of Rob Kardashian go-karting and clubbing with pop princess Rihanna, the Keeping Up with the Kardashians star chatted with Ryan Seacrest to dispel the romance speculation.

"It was just me and a bunch of girls [at the go-kart place]. It's because Rihanna's a friend, and she is friends with my friend Capricorn, and it was Cap's birthday. We all went out to celebrate our friend's birthday. It was fun. It was a good night," the 25-year-old explained to the radio host.

He might not be dating RiRi, but is he involved with fellow Roc Nation artist Rita Ora? It's anyone's best guess, but Kimmy K's little brother didn't exactly deny it.

Asked about the reports that the pair got matching temporary tattoos of each other's names, the ladies man played coy, revealing, "Rita is in the U.K. I'm just a fan. That's all. I'm a big fan. She does have tattoos."

This isn't the first time the USC grad and the British singer have been linked as a couple.

"It's not really a relationship. It's not that intense. He's a cool guy. We're close. We're good friends. I got his back and he's got mine," Ora dished to Complex magazine this past July.

We're a little disappointed Rob isn't dating the good girl gone bad!