Kourtney Kardashian’s ‘Incestuous’ Romance With Justin Bieber Infuriates Selena Gomez And Kendall Jenner?

Kourtney Kardashian and Justin Bieber’s alleged new romance has reportedly come as bad news to a number of people, two of which are in Kourtney Kardashian’s immediate family! According to a new report, Kourtney Kardashian’s younger half-sisters, Kendall and Kylie Jenner, both of whom are rumored to have hooked up with Bieber, think their sister’s reported relationship with the younger star is “crazy.”

While a People Magazine source claimed last week that Kourtney Kardashian’s ongoing hookups with Bieber weren’t serious, a new report has revealed the Jenner sisters’ feelings, as well as the reported thoughts of Bieber’s former girlfriend, Selena Gomez.

“Selena thinks it’s bizarrely incestuous and doesn’t understand why [Kourtney Kardashian] would go there after her sisters,” an insider told In Touch Weekly, according to a report by Hollywood Life on December 22. “Selena’s telling people she think it’s sick for Justin to be hooking up with so many people in the same family.”

Although there was never a confirmation of Kourtney Kardashian’s sisters’ hookups with Bieber, they were seen together getting close in a number of photos. Most recently, Kendall and Bieber were seen in an Instagram photo, which featured Bieber’s arms at Kendall’s waist, and his lips at her neck. One year prior, it was rumored that Bieber had cheated on Gomez with Kourtney Kardashian’s youngest sister, Kylie.

Either way, Kourtney Kardashian’s two sisters have reportedly been taken aback by her alleged romance with the 21-year-old singer.

“[They] think it’s crazy that [Kourtney Kardashian] hooked up with their ex. Kendall was just hooking up with him earlier this year. She feels betrayed,” Hollywood Life‘s source explained.

Meanwhile, Gomez has reportedly been more aggressive towards Kourtney Kardashian, allegedly going as far as to call her and spew profanities at the 36-year-old mother of three.

“Selena was calling [Kourtney Kardashian] a wh**e and s**t. When Selena called her, Kourtney asked how she got her number, but all Selena had to say was, ‘I hope you used protection.'”

Prior to his rumored romance with Kourtney Kardashian, Bieber reunited with Gomez, and during one particular outing in Los Angeles earlier this month, he serenaded his on-again, off-again love with a song.

Kourtney Kardashian split from her longtime partner Scott Disick in July of this year after incriminating photos of him and his ex-girlfriend, Chloe Bartoli, hit the web. In the photos, which Kris Jenner showed to Kim Kardashian during a scene from Keeping Up With The Kardashians, Disick looked enamored with Bartoli, and the two appeared to be quite comfortable with one another.

Following their split, Kourtney Kardashian and Disick were spotted on a number of occasions throughout Los Angeles after he completed a 30-day rehab program, but while there were a few rumors swirling, claiming they were on the verge of getting back together, that now doesn’t appear to be an option for Kourtney Kardashian. Instead, Kourtney Kardashian seems to be enjoying her new single life, and her time with Bieber, as she raising her three children, Mason, 6, Penelope, 3, and Reign, 1.

While Kourtney Kardashian and Bieber have been linked for months, it wasn’t until Kourtney Kardashian was caught coming out of Bieber’s hotel room at 4 a.m. that fans began to believe the rumors.

For more of Kourtney Kardashian and the entire Kardashian/Jenner family, tune into Keeping Up With The Kardashians Season 11, airing on Sunday nights at 9 p.m. on the E! Network.

[Photo by Frazer Harrison/Getty Images]