Kim and Khloe Kardashian reveal what they wish Rob had said to them before dating Blac Chyna

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Blac Chyna the Reason for Rob's Transformation?
Blac Chyna the Reason for Rob's Transformation?

In the upcoming episode of "Keeping Up with the Kardashians," Kim and Khloé Kardashian discuss how torn they are about their brother, Rob's, romance with family enemy Blac Chyna.

Though the sisters are happy that Rob has finally ended his spiraling hideaway from the world that included a massive weight gain and allegedly endless partying, they're not sure how to feel about the fact that the person that got him out of his slump is none other than Chyna who, in Khloé's words, "is Tyga's ex and Kylie is dating Tyga now."

SEE ALSO: Kim Kardashian is receiving the first-ever 'Break the Internet' Webby Award

"Rob, who doesn't even show up to Christmas for the past three years and literally wouldn't leave his room, [...] created a Snapchat [and] now he wants to be so public," Khloé explains to Kim in the clip. "The fact that he wants to be so public blows my mind."

Kim echoed Khloé's astonishment about their brother's social media presence, noting: "Rob is now, like, all over social media and out and about. He hasn't been like this in so long that, even though there's some drama, if this is what it takes -- I don't care who he's dating -- I am so happy that he's just feeling better about himself."

But, just because he's happy with his new girlfriend and living a seemingly healthier life, doesn't mean that he didn't do anything wrong in his sisters' eyes. According to them, Rob never once sat them down and explained his situation. He never explained that, even though he knows that Blac Chyna isn't exactly beloved by their family, he can't help who he falls in love with.

See Rob and Chyna's relationship:

"My thing is, do what you want [and] do what makes you happy," Kim says to Khloé. "But he should have said to us, 'Hey guys, this is how I feel. I can't help who I love and I fell in love with her, but Kylie should know this.'"

"He just has no loyalty," Kim concludes.

Kim may feel slighted by Rob's lack of explanation and lack of consideration for his family's feelings, but it's Khloé who feels especially slighted by his new relationship and actions. After all, Rob lived with Khloé throughout his downward spiral, and she was the only person who truly stood by him throughout his troubled two years.

"Am I happy he's out and about? For sure," Khloé muses during her confessional. "Am I disappointed that Rob isn't talking to me now that he's out of my house? Yeah, because I've been the only one that stood by him and defended him and wanted the best for him. So that's where it gets frustrating."

In the end, though, the sisters understand that it's not really about them. It's about Rob and his happiness. And, right now, he appears to be happy.

"She gave him confidence," Kim says of Blac Chyna. "More power to her!"

Related: See the evolution of the Kardashian/Jenner family:

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