Justin Bieber raised eyebrows when tabloid reports surfaced that he was having a “casual fling” with MLIF Kourtney Kardashian on top of reported affairs with half-sisters Kendall Jenner and Kylie Jenner. Even GossipCop bought the story. But the site was asleep on the beat, again.

Bieber hasn’t slept with any of the Kardashian or Jenner gals, according to someone who would know, Khloe Kardashian.

Related: Justin Bieber At It Again; Kicked Out of Mexico Ruins for Being an Ass (video)

When the reports broke, it appeared as though Bieber was tearing through the Kardashians like they were wet dishrags. He reportedly bedded not only the fab Jenner sisters, but also Kourtney, who is the mother of three children and 15 years older than the 21-year-old singer.

GossipCop, which claims its mission is to “bust bad dish,” was shoveling the crap right along with the low-flying tabs it covers.

What’s more, it used the same tabloid tactics. It cited an anonymous source “exclusively” who confirmed that Kourtney and Justin were “casually hooking up” for “fun.”

“We’re told the unexpected romance is not serious, but occurs occasionally and they’re both having fun,” the webloid reported.

Related: Justin Bieber Curse: How Fans Are Refusing to Let Him Live His Life

Ah… no.

Khloe appeared on “Watch What Happens Live,” with Andy Cohen Sunday night. Andy wasted no time popping the question.

“Which of these sisters has Justin Bieber been with?” he asked, naming Kourtney, Kendall, Kylie and the catch-all “all of the above.” (Ew, sleazy!)

Related: Jennifer Lawrence Delivers the ‘Hard’ Truth About Dating Justin Bieber

“None!” said Khloé, laughing. “It would be amazing if it was all of the above, though,” she added.

Say What?

Kourtney and baby daddy Scott Disick supposedly split in July, after he was spotted in Monte Carlo with his ex-girlfriend Chloe Bartoli.

We believed the split was more reality television drama than real, and sure enough Scott and Kourtney are now back together.

Related: Justin Bieber Meltdown Begins; Bags Two Shows, Faces Grueling Tour

Honestly, her Bieber hookup was on of those stories that was too good to be true.

GossipCop wasn’t alone taking the bait. Even high-minded tabs like People magazine, were suckered.

In a followup, People apologized to to “Kourtney Kardashian and Justin Bieber shippers.” So far GossipCop hasn’t owned up to its mistake.

Related: Kourtney Kardashian Says Weight Loss Driven by Anxiety; Is She Anorexic?

For its part, People claimed it was told by “multiple sources,” that Justin and Kourtney were hooking up. Hosed!

The whole story arc hasn’t dissuaded us from our belief that Justin is gay. But that, too, is just idle speculation.

He is supposedly dating Hailey Baldwin, daughter of actor Steven Baldwin. But even that seems platonic. Steve recently revealed they were just friends.

Related: Scott Disick, Kourtney Kardashian Expose Children to Star Wars Violence

For his part, Bieber is making light of the whole situation.

When Bert Weiss, host of syndicated radio program, “The Bert Show,” asked about the trysts, Bieber seemed to confirm the whole thing was a farce.

“I’m being used, man. What can I say?” he said jokingly.

Bert pressed him, asking, “Anything there?”

Related: Kourtney Kardashian Keeps Up Public Profile Amid Scott Disick Drama (video)

Bieber replied: “Nah, we’ll leave it at that.” He would only say that he’s been friends with the Kardashians “for years.”

More than likely the Biebs was probably just trying to help Kourtney preserve a little self-esteem.

Oh well, it’s not the first time Bieber has hosed the tabs and probably won’t be the last.

Related: Kourtney Kardashian Busts Mom Kris Jenner Over Naughtiness

A slew of Web sites, including GossipCop, ABC News and TMZ, reported last December that Bieber had posted photos on Instagram posing as the owner of a private jet.

Only IM bothered to check ownership records at the Federal Aviation Administration (FAA) and discovered the boast was false.

Check out the video below, let us know your thoughts and be sure to follow IM on Twitter for the latest celebrity news.