EXCLUSIVE: Rob Kardashian and Blac Chyna Split Again, Will Not Film 'Rob & Chyna' Season 2

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Rob Kardashian and Blac Chyna are moving on with their lives, off-camera.

A source tells ET that the once-engaged couple has called it quits, and therefore, will not be filming the second season of their E! reality show, Rob & Chyna.

ET reached out to the cable network for comment, as it was announced in December that the series had been renewed for another season. "We
are continuing to shoot with all the family members, and are covering
Rob and his relationship with Chyna," an E! spokesperson said in a statement.

WATCH: Rob Kardashian Posts Emotional Selfie With Dream -- ‘I Never Felt a Love or Happiness Like This’

The source adds that Rob, 29, and Chyna, 28, are remaining amicable for the sake of their 3-month-old daughter, Dream. "They are doing the best they can to stay civil and to co-parent the best they can," the source explains. "They have worked out an informal custody arrangement. They found out what works for them and they’re doing a good job at it."

The source continues, "[Rob and Chyna] realize Dream will connect them for life, and it’s not worth it for them to fight and get dramatic about their breakup. They’re forever connected by that beautiful girl, so there can’t be any bad blood."

WATCH: Blac Chyna Shares Before and After Pics of Post-Baby Weight Loss -- 'My Snap-Back Is Coming Along Great'

As for how Rob's doing post-breakup, he’s been happily spending lots of time with his daughter and sharing photos on social media. “Ever since Dream was born, he’s so dedicated to getting his life on track because of her” the source says, adding that Rob's mother, Kris Jenner, is "super involved" in her son and new granddaughter's life. "[Kris] helps Rob as much as she can, and as much as Rob wants her to."

Just last week, Rob's sister, Kim Kardashian West, shared a sweet photo of Kris spending quality time with her son and his daughter. Check it out:

Reporting by Jennifer Peros.