Rob Kardashian reportedly "won't be welcomed back" to Khloe Kardashian's house.
The reclusive reality TV star has lived with his sister for years but she is said to have shown him the door after he started romancing Blac Chyna, who has clashed with his sister Kim Kardashian West and his half-sister Kylie Jenner, whose boyfriend Tyga is Blac's ex, in the past.
A source told PEOPLE: "He won't be welcomed back to Khloé's now.
"They are dating and have been for a few weeks. Who knows how serious it is.
"Rob has been lonely for so long, so of course it's great for him to spend time with someone other than his sisters. Rob has also found an escape from his family nagging him about his heath. He has ignored their attempts to contact him.
"Rob likes her and seems to think it's mutual. It's just hard to take things seriously since obviously both share a lot of anger toward the [Kardashian-Jenner] girls.
"They have both had a lot of drama with Kim. Rob really seems to get a kick out of all the drama that he is causing."
Blac was once was good friends with Kim and even attended her wedding to Kanye West in 2014 with Tyga, who she has three-year-old son, King Cairo Stevenson, with.
Since Kylie started dating Tyga she has made several jibes at the 18-year-old star over social media.
Earlier this week, Rob's fans and family were left confused when Rob hinted that he wants Blac to have his baby in a bizarre Instagram post.
He shared a picture of Blac carrying a baby car seat with the meme caption: "Blac Chyna probably out shopping rite as she plan to give birth to the only next generation of the Kardashian name (sic)."
Rob didn't add his own caption but included a baby emoji and a clover and also tagged the model in the post.