Are Justin Bieber And Kourtney Kardashian Hooking Up?

Justin Bieber and Kourtney Kardashian have reportedly been casually hooking up for the last couple of months.

Justin Bieber And Kourtney Kardashian Dating?

Bieber, 21, and Kardashian, 36, have been “hooking up” since October, a source confirmed to Gossip Cop. Though the relationship isn’t serious between the pop singer and reality TV star, they are said to be having fun together.

The last time Bieber and Kardashian were spotted together was this weekend when the two hung out at L.A. hotspot The Nice Guy. The pair then headed to the Blind Dragon karaoke club before parting – but not for long. Kardashian was photographed exiting the Montage Beverly Hills hotel, where Bieber is a frequent guest, at 4 a.m. that night.

“Justin bragged to friends recently that he has been hooking up with Kourtney Kardashian,” an insider tells Us Weekly.

A second source added, “Oh, yeah, that’s definitely happening and has been for some time now. Every time Kourtney and Justin are together they’re extremely flirtatious. They text each other all the time.”

It seems as though the two may have first started hooking up back in October when Bieber and the mother-of-three grabbed dinner at The Nice Guy and then headed to Universal Studios for the “Halloween Horror Nights” attraction.

“When he was there with Kourtney, he was such a gentleman and so nice and respectful,” a source told Us. “He was definitely trying to impress Kourtney and act more mature.”

Bieber appeared to be taunting Kardashian’s former boyfriend Scott Disick aka Lord Disick on Instagram Sunday.

“Lord knows,” he captioned a picture of himself with an unknown woman in a somewhat compromising position.

Disick, who was caught cheating on Kardashian earlier this year, has apparently been making an effort to get sober to win back his ex and remain an active member in their kids’ lives. Upon hearing about the rumors concerning Kardashian and Bieber, Disick is dismayed.

“Scott is trying to get better, trying to turn a new leaf, and now Kourtney is going out late at night and hooking up with another bad boy in Justin,” a source told HollywoodLife. “So, Scott feels like it is a slap to the face. He feels that he is doing what she wants and she is now doing things just to make him feel bad.”

Kardashian has yet to comment on the rumors.