A source told People, "Kylie is livid. She feels super betrayed and can't understand why someone in her own family would stab her in the back like that."
TMZ reports that Blac Chyna has been a positive influence on Rob since she is allegedly helping him get back into shape. They reportedly workout together with her personal trainer.
Tyga and Blac, who are parents to a son, King Cairo, have not been on good terms since their split in 2014. He has bashed her on Instagram for supposedly spreading rumors that he couldn’t pay for the Ferrari he bought for Kylie for her 18th birthday.
Blac Chyna’s BFF Amber Rose has also slammed Kylie’s relationship with Tyga on social media, which has led to some public feuds with Khloé. Amber told a New York radio station, "Kylie's a baby. She needs to go to bed at 7 o'clock and relax. It's ridiculous. Tyga should be ashamed of himself. That's how I feel, for sure. He has a beautiful woman and a baby that he left for a 16-year-old who just turned 17." After hearing Amber's comments, Khloé gave her response on Twitter.
“@jaileenieweenie: “to provide for her family wyd” not mad she was a stripper. But dont say my sister should be in bed by 7 when she wasn't— Khloé (@khloekardashian) February 16, 2015
After news broke about the reported romance, Kris seemingly addressed it on Twitter, writing, "Had a challenging day & walked in the door to this gorgeousness. That put the biggest smile on my face & in my heart.”