Justin Bieber and Kourtney Kardashian have enjoyed an on-again, off-again relationship for months. Now a new report claims that Bieber has been using Kourtney in order to get "revenge" on Selena Gomez. While rumors have swirled that The Weeknd's ex-girlfriend Bella Hadid was upset by his romance with Selena, the new report reveals that Justin was also stressed, and that's where his relationship with Kardashian allegedly provided a convenient revenge weapon.

Justin Bieber seeks revenge on Selena Gomez

In Touch reported that ever since the photos went viral showing The Weeknd kissing Selena Gomez, both Bella Hadid and Justin Bieber have been seeking revenge.

A source told In Touch that Kourtney Kardashian gave "upset" Bieber a way to achieve that alleged goal.

Justin and Kourtney recently reunited at a club in Hollywood, and that reunion was part of Bieber's "elaborate plan to spite Selena," according to the publication. As for why Bieber hooking up with Kardashian would upset Selena Gomez, the source shared the answer.

Selena Gomez 'jealous' of Kourtney Kardashian

"It’s probably only a matter of time before Selena sends Justin an evil text to ask him about his night out," predicted the source. "She's always been jealous of his relationship with Kourtney."

And the claims don't stop there. During the summer, Selena Gomez reportedly attempted to contact Justin Bieber after she learned about his hookup with Kourtney Kardashian, according to the publication.

However, Justin informed Selena that he was "quietly seeing Kourtney Kardashian again," a source told In Touch.

Justin Bieber 'knows how to annoy' Selena

When Justin Bieber was dating Sofia Richie, Selena threw shade at Bieber on Instagram, and even accused Justin of cheating on her during their relationship. So does Gomez still have feelings for Justin?

"She’s not over Justin," added the source. "Justin wants to get under Selena's skin. And he knows how to annoy her — going out with Kourtney was the perfect payback."

The Weeknd has 'whack' music?

But Justin Bieber apparently isn't content just to get back at Selena Gomez through his relationship with Kourtney Kardashian. He also lashed out at Selena's new boyfriend The Weeknd, reported People.

Only weeks after photos emerged of The Weeknd and Gomez kissing, Bieber was asked if he would listen to The Weeknd's music. Justin responded with a no on Twitter.