Aaron Paul is officially a dad! Well, sort of.

The Breaking Bad star -- who certainly hasn't been shy about his obsession with Netflix's Stranger Things -- has been joking all summer about adopting Millie Bobby Brown (the 12-year-old actress who portrays Eleven) with his wife, Lauren. On Thursday, the adorable trio finally met, and it was as glorious as you'd imagine.

WATCH: Joe Keery Teases 'Stranger Things' Season 2, Talks Working With Winona Ryder

Lauren took to Instagram to document the exciting moment, captioning their "#firstfamilyphoto," "It's official #milliebobbypaul #happyholidayslovethepauls."

Millie echoed Lauren's sentiments, writing, "Had a wonderful evening with Aaron and Lauren! Love my #fakeadoptedparents @laurenpaul8 @glassofwhiskey #lovethemforever #newyork."

The Spanish-born, English actress also took to Snapchat to share some highlights from their fun-filled hang out.

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"With my mama," Millie wrote over a sweet selfie of herself and Lauren.

"With this guy…" another caption read.

Apparently, they spent some time "breaking things."

It's clear good looks definitely run in the "family!"

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During Aaron's guest appearance on The Tonight Show Starring Jimmy Fallon last week, he told the 41-year-old host he and his wife are actually "obsessed" with all the kids that star in the '80s-inspired series.

"Oh my god, those kids!" he said. "I love 'em, I'm obsessed with them!"

"They're coming on the show?" he exclaimed, when Jimmy informed him he was having them on in an upcoming episode. "When? Soon? Can I come? I would love to come! I'm obsessed."

RELATED: 'Stranger Things' Officially Renewed for Season Two!

Aaron then continued to gush over Millie, telling the story of how he got to interview her for Elle magazine.

"I was asked to interview her and I was terrified," he admitted. "I went to Twitter and confessed my love for [show creators] the Duffer Brothers, and I'm like, 'Dear Duffer Brothers, thank you, sincerely, everyone.' And then Elle reached out and said, 'Hey, would you like to interview Eleven?'"

"I said instantly, 'yes!'" he continued. "She's the best. She's the best! But I was so terrified. She was on a family vacation in Spain and I'm like, 'I got to make this good.'"

Aaron admitted he was a little starstruck, but made it work. "It was great," he said. "My wife and I said that we would want to adopt her. She said that, you know, we could."

It doesn't get much cuter than that!

WATCH: Joe Keery Talks 'Stranger Things' Season 2, Steve’s Hair and Justice for Barb

On Wednesday, Netflix announced the show is officially receiving a second season, with nine episodes, four new characters and the return of a few fan favorites. Ahead of the exciting news, ET caught up with Millie's co-star, Joe Keery, where he shared his hopes for his character, Steve Harrington, and why he wants "Justice for Barb."

Hear more in the video below.