“Keeping Up with the Kardashians” star Kylie Jenner does not believe the allegations by Amber Rose that the “Rack City” rapper Tyga cheated with his former lady-love Blac Chyna. The two ladies -- Jenner and Chyna -- have been feuding with each other since Tyga, who has a three-year-old son with Chyna, started dating Jenner.

“This is the same old thing Blac Chyna‘s been taunting Kylie with for the past 6 months. She claims Tyga was texting her and saying he wanted to get his family back together, she says she has proof but when Kylie called her out on it and wanted to see the proof she never came through with it. Now Amber Rose is talking about the same thing, Kylie thinks it’s so lame. She thinks they should grow up,” a source told Hollywood Life.

Rose made the comments in an interview to the GQ magazine, published Wednesday, and had said that Tyga was texting Chyna while he was dating Jenner. “I really went in on Tyga. He’d been texting Blac Chyna, saying, ‘I really want my family back’—but he was out with a 17-year-old,” Rose said in the interview.

Tyga and Chyna have also been feuding over the custody of their son King Cairo, who was reportedly seen around a suspicious green pile of what is said to be marijuana, in a video posted by Tyga on Snapchat. The video, which is suspected to create more trouble for Tyga over the custody, was taken down later.

Tyga has denied dating Jenner when she was a minor, despite reports at the time claiming otherwise. Chyna and Jenner have also been feuding since the latter started dating Tyga. Recent reports say the couple, who have not made any efforts to hide their relationship since Jenner turned 18, is looking to get married soon.