Khloe Kardashian
Khloé Kardashian is unhappy that Rob Kardashian is dating Blac Chyna Jerod Harris/Getty Images for A E Networks)

Khloé Kardashian is unhappy that Rob Kardashian is dating Blac Chyna. Lamar Odom's estranged wife is concerned about Chyna's influence on her brother.

"Rob is living with Blac now that Khloé kicked him out after finding out about him and Blac," a source told Us Weekly. "Khloé feels majorly betrayed by Rob after she always stuck up for him. She feels like this is a major blow to the family. Nobody in the family likes it."

"Kylie says Rob stabbed her in the back," the insider added. "This is not about Kylie for Rob, though. He was always cool with Kendall and Kylie. For him this is about the whole family and his way at getting back at them."

Rumours that the two are dating started after Chyna posted a picture of herself apparently cuddling up to the E! reality TV star on Instagram. In the image, Tyga's former fiancée is seen cosying up with Kim Kardashian's brother's tattooed arm. She captioned the image: "The beginning ☘"

Rob and Chyna are very open about their relationship and are seen sharing pictures of the two on Instagram. The 28-year-old sock designer had posted a meme that suggested Chyna was pregnant with his child. The image showed the former stripper holding a car seat with the caption: "Blac Chyna probably out shopping rite now as she plan to give birth to the only next generation of the Kardashian Name! #BabyKardashian."

Meanwhile, Rob has remained out of the spotlight since gaining weight. Rob did not attend Kim and Kanye West's wedding in Florence, Italy, on 24 May 2014, after she reportedly commented about his weight gain.

In a Rolling Stone interview, Kim had spoken about her brother. She told the publication: "It's not that mysterious, what's happening with Rob. He has gained weight. He feels uncomfortable being on the show, and that's OK. Do I think he smokes weed, drinks beer, hangs out and plays video games with his friends all day long? Yes."

The beginning ☘

A photo posted by www.Lashedbar.co (@blacchyna) on

☘☘☘☘☘

A photo posted by ROBERT KARDASHIAN (@robkardashian) on

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A photo posted by ROBERT KARDASHIAN (@robkardashian) on

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A photo posted by ROBERT KARDASHIAN (@robkardashian) on