Justin Bieber & Kourtney Kardashian Hot Hook-Up Scorches Scott Disick As Pop Idol Turns Santa Claus Into Belieber

Justin Bieber and Kourtney Kardashian have turned the holidays grey for her ex, Scott Disick. While the 21-year-old pop idol and 36-year-old Keeping Up With the Kardashians reality TV star are having steamy fun, Scott is feeling scorched and scorned, reported People.

Disick and the reality TV queen split after nine years and three children in June. Since then, Scott went to rehab, and Kardashian became involved in having flirty fun with the pop idol, turning her into a Belieber. Momager and Kardashian-Jenner matriarch Kris Jenner has invited Disick to her big Christmas Eve celebration on Thursday.

But given how Scott has reacted to the hook-up that his ex is enjoying,will Disick (also known as Lord Disick) grace the gathering with his presence? No one knows yet if Scott will show up, an insider shared with People.

However, the insider also revealed that Scott will take time to visit with the three children that he shares with Kardashian. Mason is 6, while Penelope is 3 and the little one, Reign, is only 1-year-old. They’ll all get to visit with Daddy Disick on Christmas Day.

However, it’s the intimate Christmas Eve party that Kris holds at her mansion that’s the unknown when it comes to whether Scott decides to ignore his anger over Kourtney’s new hook-up. An insider confirmed the unexpected romance, and a separate People source described Bieber’s feelings as a “huge ego boost” for the pop star.

But Disick is feeling betrayed despite the fact that he and Kardashian split, because he believes that she’s arranged the affair just to hurt his feelings, an insider shared with People.

“Of course it stings a bit that Kourt is hooking up with Bieber. But Scott also knows his place and that he doesn’t have the right to have a fit about it. He is convinced Kourt is doing it to hurt him. And she succeeded.”

Disick does plan to have some sort of close encounter with the Keeping Up With The Kardashians clan on Christmas. But don’t look for him to join the group (or any part of it) on New Year’s Eve. Even though he’s just out of rehab, Scott has signed up to a host a celebration at the 1 Oak nightclub in Las Vegas.

Scott Disick Returns To Partying After Rehab

Concern has risen over the way that Disick has returned to partying, according to Hollywood Take.

Scott recently went to 1 OAK L.A. to provide an intro for Chris Brown, and spent time with 1 OAK partner Darren Dzienciol. Disick also worked with Brown in his “Picture Me Rollin” music video. But it’s the partying that is cause for concern, particularly with regard to the plan to host that party on New Year’s Eve in Vegas. Can Scott stay on the sobriety bandwagon? Or is his decision to party after leaving rehab following his fourth visit there a hint of more trouble to come for Disick?

While Scott enjoys life when it comes to party time, Disick is keeping his distance from the Keeping Up With The Kardashians family. But that doesn’t mean he wants the 21-year-old pop star to get chummy with his kids, according to Hollywood Life.

Scott Disick Wants To Protect Kids From the Biebs

Scott gave Kardashian a command to protect their little ones from the pop singer that Disick regards as her “boy toy.” Moreover, he feels a sense of embarrassment for Kourt, a source told Hollywood Life.

“Scott is definitely embarrassed… But he feels Kourtney should be even more embarrassed. He can’t control her and if that’s what she wants to do he can’t stop her. But he will be damned if he is going to let Justin be around his children.”

Disick also allegedly warned Kardashian that if her new boyfriend doesn’t keep a certain distance from their children, he will “come after him.”

However, the Biebs has someone special on his side. And that’s Santa Claus, who just became a Belieber, according to Us Weekly.

Santa Claus Becomes Belieber

And it’s all for a good cause. Justin and Fashion Santa posed together at Yorkdale Shopping Centre in Toronto. The man behind Fashion Santa is Paul Mason, who is flaunting his silver fox fabulous self by offering to pose with mall-goers for selfies to benefit the SickKids Foundation. Each post with the #YorkdaleFashionSanta hashtag will result in a dollar donation from the Yorkdale Shopping Centre to the SickKids Foundation.

It's true! Celebs shop at #Yorkdale! Can you #beliebe it?! @justinbieber + #YorkdaleFashionSanta ?? #YorkdaleCheer pic.twitter.com/Hifmq0Dvew

— Yorkdale Style (@YorkdaleStyle) December 20, 2015

The center will donate up to $10,000. Santa (Mason) talked with CBC News about how he views himself and one of his most memorable experiences in the role of Claus.

“I often say I’m Santa’s younger brother — the thinner version,” joked Santa Paul. “On Saturday, I had a woman, she must have been 70 years old, she said, ‘I haven’t taken a photo with Santa since I was like 5’ … so I love it.”

Ho ho ho.

[Photo by Dimitrios Kambouris/Getty Images]