In a preview clip for Sunday's Rob & Chyna. the 28-12 months-outdated model was quite cordial when coming encounter to face with the 26-12 months-previous rapper, who is the father of her son King, and his girlfriend Kylie Jenner, who also happens to be Rob Kardashian's sister. "Hi, we finally made it, we lastly made it," Chyna greets the couple with a hug. Kylie, 19, says she's "so glad" that Chyna and Rob are at the get together, due to the fact she "did not consider" they were coming. "Here comes Kylie and Tyga," Chyna later on says to camera. "I kinda talked to them for a moment since this is going to be my future sister-in-law." Meanwhile, Rob doesn't seem to be enjoying himself at the party. "Absolutely everyone is swarming Chyna and I, and it truly is all enjoy, I get it, it can be all great, but it's just specifically what I did not want," he admits. "I just come to feel a good deal of eyes are on me, and I just want everything could be just typical and we just concentrate on Khloe. I'm not about the entire, like, theatrics and things." Later on on in the party, following Chyna greets Tyga, she says she can inform something's "wrong" with Rob. The 29-12 months-previous reality star insists that he is "great," but then asks his fiancee, "You come to feel like leaving?" On an August episode of Keeping Up With the Kardashians. Khloe uncovered why she determined to invite Chyna to her birthday party. "I don't truly know Chyna. and I wanna change that," she explained. "I want to make every thing delighted and that we're all just accepting of 1 a different."