Scott Disick Thinks Kourtney Kardashian and Justin Bieber’s Hookup Is ‘Dumb and Immature’

The Lord is displeased.

Scott Disick is allegedly unhappy with news that Kourtney Kardashian and Justin Bieber are casually hooking up. Though all parties have remained quiet on the matter, sources close to Disick say the father-of-three is not too thrilled with the way the mother of his children has been acting ever since their breakup this summer.

Though Disick, 32, reportedly disapproves of Kardashian, 36, and Bieber, 21, hooking up, he knows he can’t do anything about Kardashian’s love life now that they’re both single.

“He’s had so many stories about him recently, he has no reason to be pissed,” an insider tells Us Weekly. “He feels like he has to take the humiliation.”

“Scott feels she’s doing this to get back at him and get revenge,” the source continues, explaining that Disick knows he can’t say a word because of his own partying past that landed him into rehab. “He feels he has to take it and can’t say anything after all he did to her, but he thinks it’s dumb and immature.”

What’s even more awkward is that Disick is supposedly still staying at Kardashian’s house while he tries to find a new place to live.

Insiders claim that Kardashian and Bieber have been “hooking up since late August, early September” but have just started to spend more alone time together. Though word has it that Kardashian has been denying the hookup rumors to her family, those close to Bieber’s camp say the reports are true and that the “Sorry” singer has even “bragged” about his latest tryst with the reality star.

Kardashian was recently spotted partying with Bieber at Los Angeles’ The Nice Guy before she was seen leaving Bieber’s hotel after 4 a.m. The pair previously spent time together at Universal Studios’ Halloween Horror Night before Kardashian attended Bieber’s American Music Awards after-party last month.