If you spend a lot of time with us here in the world of celebrity gossip, then there's a good chance you've heard this one before, Hell, it seems to pop up every few months, despite the fact that Rob appears to be in a serious, long-term relationship.
This time, the reports are based on photos of the possible couple published by TMZ.
"I sent (Stewart) a text message saying: 'I know you've seen all this stuff but you know I would never disrespect you. I'm just trying to be a friend to him but it is unfortunate that I do have a set of t--s,'" she told ELLE UK in 2013.
Katy Perry, Robert Pattinson sing karaoke Still, the two have built a solid friendship over the years.
The false report was published Sunday morning by TMZ.