Rob Kardashian, Blac Chyna Hook Up: Kylie Jenner Thinks Her Brother Has "Hidden Agenda"

Kylie Jenner doesn't believe that the alleged Rob Kardashian and Blac Chyna hook up is the real deal. In fact, the reality star thinks that her brother is pursuing Tyga's baby mama for all the wrong reasons.

Although the most obvious reason that Jenner would give was that the 27-year-old ex of her on-and-off boyfriend is getting back at her by hooking up with her brother. But surprisingly, she didn't mention anything about Chyna's relationship with Tyga.

"Kylie has her own take on why Rob is hooking up with Blac Chyna,” a source told HollywoodLife exclusively. The source even went on to say that the 18-year-old is "convinced" that Kardashian has a "hidden agenda" on why he got into an alleged romance with Chyna.

Even though his sister has been feuding with Blac Chyna, the 28-year-old only son of Kris Jenner stayed in touch with her and they have maintained a friendly relationship.

"She and Rob have known each other for a while," a source told E! News. "And she had been staying in touch."

So does this mean that their friendship have turned into a full-blown romance? Kylie Jenner doesn't think so.

She thinks “that the real reason he’s involved with Blac Chyna is to piss off the entire family,” the HollywoodLife source continued. “Kylie thinks Rob is doing this for shock value and it is totally not cool. It’s just back stabbing all the way.”

If Jenner is right, then Kardashian will definitey "shock" them even more by his recent post. He shared a meme of Blac Chyna on his Instagram with words written on it that read, "Blac Chyna probably out shopping rite now as she plan to give birth to the only next generation of the Kardashian name! #Baby Kardashian"

A photo posted by ROBERT KARDASHIAN (@robkardashian) on Jan 26, 2016 at 9:55am PST