Colin Jost Details Relationship Between Son Cosmo and Scarlett Johansson's Daughter Rose

Live from New York, it’s Colin Jost with an adorable update.

The Saturday Night Live star gave an inside look into his life at home with wife Scarlett Johansson, their 3-year-old son Cosmo and the actress’ 10-year-old daughter Rose (who she shares with ex Romain Duriac).

“The two of them spent a lot of time together this summer, which was nice for them,” the comedian exclusively told E! News. “She's a very nice, loving sister.”

Because assembling their brood isn’t always easy.  “Normally she's got her own life,” Jost—whose new comedy special Colin Jost & Michael Che Present: New York After Dark airs on Peacock Sept. 12 at 9 p.m. ET—continued, “but this time she was forced to stay with him for a lot of time, and they got along really well.”

Which means Rose was also there for one of Cosmo’s biggest milestones yet.

“He drank some milk and then said, ‘Some things in life you just have to savor,’” the 42-year-old star recounted of his son’s deadpan joke. “Which I thought was nice.” (For more with Colin and Michael, tune into E! News tonight, Sept. 11.)

After which Colin confirmed, “He is funny. He’s sort of shy sometimes, but he's a gregarious little guy. He's fun.”

Colin’s glimpse into his and Scarlett’s private life comes as a rare occurrence, as the two often opt to maintain a low profile since tying the knot in 2020.

Scarlett has, however, previously revealed how Rose first adjusted to her big sister duties after welcoming Cosmo in 2021.

"She's pretty neutral about it," the Black Widow star said during an appearance on The Ellen DeGeneres Show in 2021, "which I think is a good thing."

She continued, "I imagine that they'll be very different people. You know, my daughter is a little bossy. I don't know where she gets it from, and she's very headstrong…Well, he's just putting his feet in his mouth. So, he seems pretty laid-back."

Her motherhood journey hasn’t been so chill, rightfully so.

"It's really tough," Scarlett said during an April 2023 appearance on The Skinny Confidential Him & Her Podcast. "I remember my daughter when she was 2, I said, 'This is great. I don't know what everybody is talking about.' And then she turned 3, and it's like being in an emotionally abusive relationship."

“It's crazy, very intense emotional swings and so bossy and adamant,” she recalled of that toddler era. “And also these huge, constant mood swings...You're up and down constantly."

Babies, on the other hand, are much easier to handle.

"Having a baby is so lovely," she gushed. "They're so cute. They sit there and they love you and then that's it. And you just get love from them."

For a closer look inside Scarlett and Colin’s world, read on…

-Reporting by Ashley Bellman

From Hollywood power couple to super parents, the couple announced the special news that they recently welcomed a baby boy named Cosmo.

In May 2021, the couple proved they know how to have a little fun during awards season. While accepting the Generation Award at the 2021 MTV Movie & TV Awards, Colin brought out a green bowl of slime and poured it over his wife. The moment? Iconic.

When award season came to a close at the 2020 Oscars, Scarlett and Colin were one of Hollywood's most fashionable—and lovable—couples. 

While celebrating her 2020 SAG Awards nominations for Marriage Story and Jojo Rabbit, Scarlett received support from Colin. 

After the show is the after party! Colin and Scarlett whoop it up at Netflix's 2020 Golden Globes After Party. 

In between posing for photos in her stunning red gown, Scarlett managed to sneak in a kiss with Colin at the 2020 Golden Globes. 

The lovebirds shared a laugh at the Avengers: Endgame premiere on April 22. On May 19, E! News confirmed that they were engaged after two years together. 

Scarlett Johannson and Colin Jost attended the 2018 American Museum of Natural History Gala together. 

The SNL actor and Avengers actress celebrated the best in television at the 2018 Primetime Emmy Awards.

The cold never bothered them anyway—especially at Rockefeller Center.

The Hollywood couple slayed during one of the biggest red carpets in the world.

They say a picture is worth a thousands words. But when it was time for Scarlett Johansson to celebrate Avengers: Infinity War, all we saw was love in Colin Jost's eyes. 

In a rare joint red carpet appearance, the couple walked the carpet together at the premiere of Scarlett Johansson's Avengers: Infinity War.

The couple stepped out for the first time together at the 2017 Museum Gala at American Museum of Natural History.

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