Rob Kardashian Opens Up About Fighting With Blac Chyna in New 'KUWTK' Promo

The 29-year-old reality star vents about the couple's recent explosive argument to sisters Kim and Khloe.

Rob Kardashian is trying to make it work with Blac Chyna.

The 29-year-old reality star opens up in a new promo for the midseason finale of Keeping Up With the Kardashians, saying he really took his explosive fight with Chyna "to heart."

WATCH: Rob Kardashian Opens About His 'Dark Days,' Says the Moment He Met Blac Chyna, He 'Wanted to Be More Than Friends'

"It takes either one person to man up.. obviously that’s going to be me," Rob tells sisters Kim and Khloe after his big argument with Chyna.

"At the same time, I'm not going to argue with a female," he explains. "We had a good talk last night, so we'll see."

"I'm the one who said arguments are normal," Khloe offers. "It happens."

"Alright, but at that second, I took it seriously, and I took it to heart," Rob replies.

WATCH: Rob Kardashian Explains Skipping Kim and Kanye West’s Lavish Wedding: 'I Just Wasn't Comfortable'

"Because you're sensitive!" Khloe snaps back. "You have to worry about Rob, and how you can be strong and better for you, and now your baby."

"My plan is not to have a kid with somebody and not be with the person," Rob concedes. "That's just bizarre to me."

"I know Rob and Chyna have a long way to go, but I'm really happy that they are working things out. Relationships are hard no matter what, and as long as Rob is trying, and starts really engaging and communicating, that’s all I could ask for," Khloe says after her conversation with her brother. "But he has to figure it out, and this is like baby steps to his life."

Keeping Up With the Kardashians
airs Sundays at 9 p.m. ET/PT on E!.

WATCH: Blac Chyna Says Her Child With Rob Kardashian Won’t Have a ‘K’ Name, Calls Ex Tyga ‘Kinda Cheap’

While the expecting couple deal with the aftermath of their fight on Keeping Up With the Kardashians, there's a whole lot more where that came from on their new show, Rob & Chyna.

Check out an extended look at their drama-filled new reality show in the video below.