Miley Cyrus and Justin Bieber having an affair? Miley says she had no idea and probably would have had it catered at the very least. Cyrus might also have invited Selena Gomez and Justin Bieber's dad.

In the midst of rumors that Selena Gomez and Justin Bieber are back together or that Selena Gomez was having Justin Bieber's baby, comes a new rumor: That Miley Cyrus and Justin Bieber hooked up at a party behind Selena Gomez's back. If that's not enough for you, there's also a rumor that Miley hooked up with Bieber's dad.

According to multiple reports, Miley Cyrus took to Twitter to deny having an affair with Justin Bieber. Miley hasn't gotten around to addressing the rumors that she hooked up with Justin Bieber's dad Jeremy yet.

Life & Style magazine, under the caption "ultimate betrayal," claimed Justin and Miley hooked up while Bieber was still dating Selena Gomez.

A source told Life and Style , "Justin and Miley were seeing each other behind her back last year... Just days after Selena dumped him, Miley spent the night at Justin's house."

Life and Style also ran a picture of Cyrus and Bieber at a party.

Miley took to Twitter to laugh "Btw this is photoshopped. Bieber wasnt at Pharrels bday party [where the Miley pic was taken]. I never read this s**t and that's why."

Liberty Voice's Janette Verdnik reported that, according to Sugarscape, "Supposedly, a few weeks ago, Justin and his father Jeremy rented a hotel suite in Los Angeles, and Miley was also there partying. She and Jeremy ended up in a bedroom alone for over an hour and something surely happened between the two of them."

Cyrus might have well have tweeted "I never read this s*** & that's why." But she was actually talking about the photoshopped pic.

"I would rather eat my own tongue," Cyrus also blasted on Twitter.