Selena Gomez called up her ex-boyfriend Justin Bieber’s rumored girlfriend Kourtney Kardashian and then sent Bieber series of angry text messages, InTouch Weekly reported. Bieber has reportedly dating Kardashian because he considers older women to be “dominant.”

“Selena texting Justin and expressed how used she felt, since they’d just hooked up around the time of the American Music Awards. But his response was, ‘You know how this business works,’ meaning he did it for the publicity,'” InTouch Weekly reported, according to Hollywood Life.

An insider reportedly told the gossip website that Gomez thought the alleged relationship between Bieber and Kardashian was “incestuous.”

“Selena thinks it’s bizarrely incestuous and doesn’t understand why Kourtney would go there after her sisters,” the source told magazine. “Selena’s telling people she thinks it’s sick for Justin to be hooking up with so many people in the same family.”

Not only Gomez, but Kardashian’s family reportedly thinks her rumored relationship was “crazy.” “[They] think it’s crazy that she hooked up with their [family members’] ex,” the source told InTouch, according to Hollywood Life. “Kendall [Jenner] was just hooking up with him earlier this year. She feels betrayed.”

Meanwhile, it was recently reported that Gomez would be avoiding Beiber during holidays and would be spending Christmas with her rumored boyfriend Niall Horan. She had previously talked to Bieber and confronted him over his rumored relationship with Kardashian, who is 15 years elder to him.