Robert Pattinson and Riley Keough dating reports were one of the biggest tabloid fails of the summer.

Robert Pattinson and Riley Keough dating reports were one of the biggest tabloid fails of the summer.

“Twilight” heartthrob Robert Pattinson never dated Elvis Presley’s granddaughter, Riley Keough, despite a slew of tabloid reports to the contrary, according to a definitive source, Riley’s mom Lisa Marie Presley.

Sketchy tabloids from HollywoodLife to UsWeekly reported the rumor as fact over the summer, citing, as always, “anonymous sources.”

Many sites continued reporting it even after it was debunked in a report July 2 by TheImproper, other gossip sites and finally Riley herself.

Riley Keough Blasts Tabloids for Robert Pattinson Dating Stories

The King of Rock’s granddaughter blasted the reports over Twitter on July. “one word….bullshit!” she wrote.

On the same day, HollywoodLife and OK magazine published new reports that still claimed Keough and Pattinson were dating. OK even reported that Stewart had confronted Keough over her so-called romance, also false.

Lisa Marie, who knows a thing or two about the Hollywood gossip whirl, officially put the kibosh on reports during an appearance on “Watch What Happens Live,” on BravoTV yesterday (Oct. 17).

Robert Pattinson, Riley Keough Dating? NOT! Another Tabloid Fail

While it’s well after the fact, her comments leave no wiggle room for the reckless reporting. A caller got the ball rolling by asking her who Riley was, and was not, dating.

“There’s so many rumors about your daughter Riley–so beautiful and growing up to be such an actress–and her relationships,” said the host.

“Well, I don’t what to say who’s she with or not,” Lisa Marie replied. “I will say who she’s not with.”

Robert Pattinson, Kristen Stewart Lies and the Liars Who Tell Them

“And, that is a complete lie and silliest thing I’ve ever heard is that she was with Robert Pattinson, because she and Kristen Stewart are, like, best friends,” Lisa Marie added.

“So that was the craziest rumor that I will put to bed… That was not true.”

Check out the video below and follow TheImproper on Twitter for Robert Pattinson news you can trust.