Kim Kardashian was furious with Blac Chyna when she called off her engagement to Rob Kardashian following the birth of their daughter Dream.
Kim went over to console her brother after he shared Snapchat videos that were so worrying police were called to his home to check on him.
In a sneak peek from Sunday's episode of Keeping Up with the Kardashians, the reality star called Blac Chyna's motives "hurtful" and said she doesn't think Rob and Chyna are "meant to be" together.
Heartbroken: Kim Kardashian consoled Rob Kardashian over Blac Chyna in a clip from KUWTK | E!
"I've always been super cool with her," she told Rob and Corey Gamble in the clip. "I have a different relationship with her than like, you know, what you guys have and with Kylie and I always hear her out and stuff, but just seeing the motives is what's hurtful."
She also told the cameras: "I've always felt like them as a couple just isn't that healthy and I think they know that too. It's not like some secret. Rob can be really irrational and he just has to learn to really take responsibility for himself and not blame Chyna. This just like all has to stop."
Kim added: "It's so clear what this relationship is and that they're just not meant to be with each other."
Back on: The former couple sparked rumours of a reconciliation after a flirty date night | Snapchat
Rob, and Chyna got engaged in April of last year after three months of dating and welcomed Dream in November.
Their relationship has always been rocky, and they split in February, but flirty Snapchat photos from a dinner date on Wednesday have sparked rumours they might be back together.
Rob admitted in the clip that he was devastated after their latest breakup, sharing, "You had a baby with me. I would expect you to be in love with me and you keep saying we're getting married and this and that," he said. "I would expect all that to be real. I wouldn't expect that to be lies and fake."
Watch the tense clip below:
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