Media reports speculated this week that Pattinson, 27, had moved on from his ex-girlfriend Kristen Stewart by dating Keough, Stewart's co-star in the 2010 film "The Runaways."
"Riley isn't dating Rob," a representative for Keough, 24, told Just Jared Wednesday. "And I can confirm that Riley was not photographed at all this weekend."
Campus cop fatally shoots Texas student during traffic stop
N.J. man wakes up from 10-hour sleep with knife in back