Bradley Cooper and Denise Richards are not an item. Looks like B.Coop is still on the market -- phew!

It was reported that the sizzling "Hangover" actor and reality TV mom enjoyed a cozy dinner in Hollywood earlier this month, but Denise says there's nothing going on!

On Tuesday morning, Richards turned to Twitter to call the story "B.S."

Cooper's rep claims a PR company made up the rumor to get press for a diet program.