With the Kardashians, you just never know what's going on behind closed doors, and that's why some fans aren't doubting this new rumor about the reality television clan.

Kris Jenner and her daughters are apparently encouraging Rob Kardashian to give his girlfriend Blac Chyna the boot by slowly pushing her out of the picture and out of his life for good, too.

According to Celebrity Dirty Laundry on Monday, the Internet model and celebrity was not invited to Rob's birthday celebrations last week, as Kim, Kourtney, Khloe and the rest of the family are trying to keep Chyna as far away from the Kardashians as possible.

The rather reclusive former reality television star has been very public about his relationship with Chyna by taking every opportunity to be seen with her and even sharing intimate photos of the two on his social networking accounts. This has irked his family, as Chyna's baby daddy is rapper Tyga, who is now dating Rob's little sister, Kylie Jenner. The two have had their own fair share of Instagram spats over the last few years, too.

Blogger Grace Gerard even wrote, "There's so much bad blood between Kylie and Chyna over Tyga that it would have been in poor taste to for Chyna to insist Rob take her to a Kardashian and Jenner dinner. After all, an underage Kyle did seduce Tyga away from his son King Kaiser's baby mom."

She added, "It could be that Rob begged Chyna to stay home. However, history shows us that Kim and Kris will throw a fit until they get what they want. And what Kris and Kim want is Chyna out of Rob's life."

So far Chyna herself has not made any comments as to why she wasn't at her boyfriend's birthday dinner, although it doesn't look like she'll be going anywhere anytime soon, either.

Keep up with Enstars for all the latest news on Rob Kardashian, Blac Chyna and all of your favorite celebrity couples right here.

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Blac chyna, Rob kardashian