Kourtney Kardashian, 36, was rumored to be hooking up with Justin Bieber, 21, but reports suggested that the relationship isn't serious as the "KUWTK" star was allegedly only using the "What Do You Mean" hitmaker to get back at Scott Disick.

A report by Hollywood Life claimed that Kourtney Kardashian really likes Justin Bieber but the hookup was about Scott Disick.

"She's pretty much just using Justin to get revenge," the alleged source claimed. "She was so humiliated by everything Scott put her through, this is the perfect way to give him a taste of his own medicine."

The source continued, "She loves that this is upsetting Scott, she wants him to suffer the way she has. At the same time she's still denying that she's actually hooked up with Justin, she says they're just friends but no one is buying it." our source adds. After spending nine years being treated poorly by Scott, she must be loving this!

Kourtney Kardashian announced the split from Scott Disick earlier this year, over reports that he cheated on his ex, Chloe Bartoli, as well as her uncontrolled addiction to alcohol and partying.

But rumors of a reunion emerged after Scott Disick checked himself into a rehab, and promised to cut back on her partying ways. Later, the self-proclaimed life of the party was snapped hanging out with Kourtney Kardashian and their kids.

However, Radar Online reported that Scott Disick was again partying at Chris Brown's album listening party at Hyde nightclub in Los Angeles on Dec. 15.

"Disick was pictured partying alongside Brown, French Montana, Usher, A$AP Rocky, A$AP Ferg (all of whom were featured in the R&B singer's latest music video 'Picture Me Rollin') and many more that evening," it said. "Though it remains unclear whether the father-of-three partook in any drinking, the event certainly goes against his efforts to steer clear of the party scene."

With Scott Disick's partying and Kourtney Kardashian's rumored hookup with Justin Bieber, it seems a reunion is proving harder and harder to achieve.