Tabloids began speculating the former Twilight star was dating Elvis Presley's granddaughter after a woman who bears a striking resemblance to Riley was photographed with Rob in the actor's Silverado pickup truck over the weekend.
But Riley's rep says there's no truth to the dating report, insisting it's impossible since Keough—who starred with Pattinson's ex Kristen Stewart in The Runaways—was not photographed the day the pic was taken.
"Riley isn't dating Rob," a rep for the 24-year-old beauty told JustJared.com. "And I can confirm that Riley was not photographed at all this weekend," her rep added, confirming Keough was not the mystery woman in Rob's car.
R.Pattz was spotted Saturday in Los Feliz, where he was snapped driving his truck with a redheaded woman in the front seat. The twosome picked up a ping-pong table before heading back to Pattinson's pad together.
While Rob and Riley are not a couple, a source close to the 27-year-old heartthrob tells E! News the Cosmopolis star is "very open" to dating, although he is not seeing "anyone at the moment."
"Rob is just enjoying hanging and chilling with friends at this point in his life," the source said, adding that the actor is in "a good place" following his split with longtime girlfriend K.Stew.
Stewart and Pattinson pulled the plug on their nearly four-year romance in May due to a reported clash in priorities, and Rob was seen moving his belongings out of Kristen's home shortly after the couple called it quits.
On Tuesday, the 23-year-old brunette beauty made her first public appearance since the painful split, attending the Chanel show at the Paris Fashion Week, where she reportedly sat in the front row with Michael Pett, Rose Byrne and Johnny Depp's ex Vanessa Paradis .
Pattinson has also been busy since Robsten decided to go their separate ways, spending quality time with his bros while gearing up for his next project. He's set to begin filming on his upcoming flick in Toronto in just a few days.