Justin Bieber & Kourtney Kardashian Affair Blossoms Into Baby Bump? Scott Disick & Selena Gomez Reactions Shock

Justin Bieber, then a 21-year-old pop idol, and Kourtney Kardashian, a 36-year-old mom of three and Keeping Up With The Kardashians reality TV star, may have ranked as the most unexpected couple of 2015 when the two initially hooked up last autumn after Kourtney split from baby daddy Scott Disick. Since then, Justin has turned 22, and his romance with Kardashian continues to stay strong, an insider told Radar Online.

The only difference as their hook-up has heated up is that the Biebs has learned to be more subtle in discussing his romance with Kourtney.

“Justin’s learned to keep his mouth shut, because Kourtney made it clear she needs this to be discreet for the sake of her kids as well as the complicated situation that’s going on with Scott [Disick],” shared the insider.

Kardashian and her boy toy have been partying together, and Kourtney even was seen trying to sneak unobserved from his hotel at 4 a.m.

Amid that affair, Kardashian continues to have problems with Scott, however. Disick took a trip to Mexico and was observed drinking and partying with various women despite his recent stay in a rehab treatment center. However, Kourtney’s concern for Scott doesn’t worry Justin.

“That suits Biebs just fine,” commented the source. “He says Kourtney’s the best lover he’s ever had and he can’t stay away from her.”

For those wondering about Hailey Baldwin, who at one point was reported to be dating the “Sorry” singer, well, sorry.

“[He’s] obviously still stringing her along and there’s nothing long term in the cards,” added the insider.

As evidence, when Bieber gave himself a happy-22nd-birthday party recently, he invited both Kourtney and Hailey, reported Us Weekly, which cited sources confirming that the pop idol was hooking up with Kardashian.

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Those sources had revealed that the Biebs had even bragged about his romance with Kourtney.

“Justin bragged to friends recently that he has been hooking up with Kourtney Kardashian,” shared one insider.

Kardashian attended Bieber’s American Music Awards afterparty at the Nice Guy in Los Angeles late last year as well. And another insider also confirmed the report that the reality TV star and pop idol had hooked up to Us.

“Oh, yeah, that [hookup has] 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.”

The two also have been seen at Hollywood hot spots, including a karaoke lounge, Blind Dragon.

“Kourtney and Justin seemed flirty,” noted an observer at one of their outings. “I saw them a few times touching and laughing together.”

In addition to eyewitnesses observing Kardashian exiting the Bieb’s hotel at 4 am, a new report claims that in addition to heating up their hookup, they’ve having a baby together. And that report about a Kourtney-Justin baby has made his ex, Selena Gomez, outraged, noted a source cited by the Movie News Guide.

Gomez is not jealous about Kardashian, but she is anticipating plenty of controversy and questions about how she feels, which annoys her, according to that insider.

“She has heard about it and thinks that it is stupid. She doesn’t think it’s real, but also doesn’t want to think about it or talk about it. She is just mad that if she does an interview in the near future she will have to dodge the question.”

As for Kourtney’s ex, Disick, he’s stressed over the rumor, an insider told Hollywood Life.

But the issue is that Disick wants to be able to party himself with other women while remaining possessive of Kardashian.

“Scott would be pissed, crushed and fly off the rails if Kourt [got pregnant],” said the insider. “If Kourt truly wanted to hurt him, that would be how. And Scott has a double standard, he likes to have his cake and eat it too. Problem is, he doesn’t want anyone taking a slice out of Kourtney. That’s his baby’s mother and the only thing he wants coming out of her womb are children with his DNA.”

But neither Disick nor Gomez may have any reason to worry, because sources told Gossip Cop that the reports that Kourtney is blossoming with a Biebs baby bump are not true.

One source summed up those reports as “B.S.”

And another sign that Kardashian isn’t pregnant is a report from Radar’s insider that momager Kris Jenner is plotting a wedding — and it’s for Disick and Kourtney, not the Biebs.

Kris sees a Keeping Up With The Kardashians ratings goldmine in a wedding for the former lovebirds, and that translates into money.

“She knows there are huge bucks to be made if Scott gets his act together and agrees to walk down the aisle with Kourtney,” said the source. “It’s classic Kris, turning a blind eye to Scott’s issues, all she can think of is money and opportunity.”

As for Disck’s relapses? Jenner just changes the wedding date “a few months” after each relapse.

[Photo by Dimitrios Kambouris/Getty Images]