Tyga has some surprising thoughts about his baby mama Blac Chyna's engagement to Rob Kardashian.

The news was the topic of the night on Sunday's "Keeping Up with the Kardashian," where we saw the entire Kardashian clan react to the proposal ... which none of them saw coming.

The rapper was actually one of the first to speak out about the news on social media ... and he shared some more insight last night in a candid conversation with Kim Kardashian.

In case you forgot, Tyga and Blac Chyna share a son, King Cairo, together. When they split, he started dating Kylie Jenner, something Chyna wasn't too thrilled about at the time. Both Blac Chyna and her BFF Amber Rose have attacked him for hooking up with the young fashionista in the past.

"The best thing is to sit back and let them be," Tyga said of his ex's engagement last night. "Everything you're going though, I've been through worse with her."

Kim acknowledges that it "hurt" her former friend's feelings that her "little sister is with her baby daddy" and avoided posting photos with Tyga to spare her some additional hurt.

"That also has nothing to do with you. That's like, that's life," Tyga responded. "People have to find out for themselves and go their own way. She's not a bad person.

"When she posted something about Kylie, I went so crazy on my brother," Kim added, before Tyga said she only did that "because she's trying to get at me."

Elsewhere in the episode, Kanye West also defended Rob -- saying, "both me and Kim have been in situations where we were with someone that all of our friends hated."

While Kim decides to call her brother to patch things up, there's one family member who still isn't having it.

"Rob is full of bulls*** and I can't handle it," Khloe admitted in a confessional. "He almost likes this wedge that.s being put between us."

She also says that her younger sibling is "the weak link in the bunch and he needs to be cut."

We'll see the sisters come face to face with Rob next week -- and we can't wait to see how that conversation goes. Check out a sneak peek below.

For more of today's hottest headlines, check out the video below:

Hot Videos