Rob Kardashian Promotes Blac Chyna's Makeup Line After Their Split, Looks Slim at Family Movie Night

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He's working on co-parenting with his former fiancee.

No bad blood here! Rob Kardashian proved he's got nothing but love for his former fiancée, Blac Chyna, on Monday, sharing her cosmetics company's new Lashed ad to his Instagram account.

The lengthy movie-style clip features Chyna herself, with Rob proudly promoting it.


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

Earlier this month, ET exclusively confirmed that the couple split shortly after celebrating their one-year anniversary. Though they’ve ended their engagement, the exes are still working hard to co-parent their 3-month-old daughter, Dream Kardashian.

"They are doing the best they can to stay civil and to co-parent the best they can," a source told ET. "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 birth of his first child has had a major impact on Rob. The once-reclusive reality star is working on stepping up to the plate for the sake of his little girl.

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"Ever since Dream was born, he's so dedicated to getting his life on track because of her," the source continued. "[Kris Jenner] helps Rob as much as she can, and as much as Rob wants her to."

Rob has also been clocking quality time with his famous family, attending a film screening of The Shack with his sisters on Monday.

WATCH: Blac Chyna and Baby Dream Rock Matching Swimsuits at Amber Rose’s House: Pics!

The slimmed-down star was spotted leaving the Cinepolis Theater in Westlake Village, California, with sisters Kim and Kourtney Kardashian, Caitlyn Jenner, and Kim's husband, Kanye West.

For more from the Kardashians, watch the clip below!