How the Kardashians Reacted to Rob Kardashian’s Quick Proposal to Blac Chyna

On Sunday's episode of “Keeping Up with the Kardashians,” viewers got an inside look on how Rob Kardashian's family dealt with his shocking engagement news.

During the episode, Rob's mom Kris Jenner vented her frustration over being blindsided by the news her son had asked Blac Chyna to marry him — she found out while vacationing with the family in Vail, Colorado. She said, "He asked her mom for her hand in marriage and he's never even mentioned it to us. I'm not going to call him, he should have called me. To hear Rob got engaged through social media is a bit disappointing to say the least."

Khloé added more fuel to the fire, saying the family was "not going to [Rob's] wedding if he has a wedding.” She continued, “Why was he able to propose in front of her whole family but not us? I feel like Rob is deliberately excluding us from so many things and he almost likes this wedge being put between us all… Why would we congratulate him? No one should congratulate them.” Watch a clip!

Kourtney also threatened to change her children's last names, so Rob wouldn't be the only carrying the family's famous name. As for his wedding, she commented, “But how many weddings have we been to in this family and they don't mean s**t, so let's all get over it!”

Even though Kim felt Rob dissed the family by not telling them about his engagement, she called him because “silence can drag it out longer.”

Kylie's on-again, off-again beau Tyga had a more laid-back approach to his ex Blac Chyna's engagement. He explained, “The best thing is to sit back and just let them be. Everything you're going through I've gone through worse with her. She's not a bad person.”