Millie Bobby Brown's wedding is set be the ultimate Stranger Things reunion.
Millie's former costar Matthew Modine shared that he'll be in charge of officiating the upcoming nuptials between Millie and fiancé Jake Bongiovi.
"I have one of those licenses to get people married," he told Mario Lopez and Kit Hoover on Access Daily March 20, "and Millie thought it'd be great, and then Jake said it would be a great idea."
The Oppenheimer actor shared that he wrote wedding vows for the couple—who got engaged last April—and added that "they loved what I wrote for them to join hands and to become husband and wife."
Matthew's road to officiating started during Covid, when he performed an outdoor wedding for friends in upstate New York. In fact, he loved the experience so much, he was excited to get Millie's request.
"It's such a beautiful thing to be able to join two people in holy matrimony," he said, adding that he and his wife Caridad Rivera have been married for 44 years and that marriage is "amazing when it works."
While Millie and Matthew had a tumultuous on-screen relationship during his run on Stranger Things playing Dr. Martin Brenner, the two have maintained a close friendship.
"We meshed," Millie told Tudum by Netflix in 2022, "and it was just a true, real friendship. Nothing was ever forced. It just worked."
The 20-year-old added, "I found that person to rely on and know he's always got my back."
In addition to the blessing from Millie's Stranger Things "Papa," Millie and Jake also have the blessing from Jake's actual father, Jon Bon Jovi.
"They're growing together," Jon recently told E! News. "They're madly in love and we love them both for that. It's an exciting adventure."
The "Livin' On A Prayer" singer has also defended the pair against fans who think Jake, 21, and Millie are getting married too young.
"I don't know if age matters," he told SiriusXM's Andy Cohen Live last May. "If you find the right partner and you grow together, I think that would be my advice really: growing together is wise. Growing together. I think that all of my kids have found the people that they think they can grow together with, and we like 'em all."
For more from Millie and Jake's love story, keep reading.
June 2021: First Instagram Pic
The pair sparked romance rumors around the time that Jake posted this photo, with the caption, "bff <3"
November 2021: Never Say Goodbye
The couple officially confirmed their romance with this PDA pic.
November 2021: Bon Jovi 2.0
"We're starting a band," Jake wrote on Instagram, "send name ideas."
December 2021: Merry Christmas
The Stranger Things star and the actor celebrated their first Chirstmas together in 2021.
December 2021: Happy Holidays
Sweet selfie.
February 2022: Celebrating Millie's 18th Birthday
Twinning.
March 2022: Red Carpet Official
Millie and Jake make their first joint appearance at a celebrity event—the 2022 BAFTA Film Awards in London.
May 2022: Stranger Things Premiere
Millie and Jake were twinning at the premiere of Stranger Things season four in New York City.
January 2023: New Year's
Millie shared photos of the couple in celebration of the New Year, writing, "endlessly in love with the year I've had."
January 2023: New Year's
One snapshot showed a photo booth strip of the loved-up couple.
January 2023: New Year's
As Millie put it, "grateful for my friends, family, donkey (bernard), my doggies, my puppies teeth, and my partner for life."
February 2023: Golden Birthday
Jake marked Millie's 19th birthday on Feb. 19, 2023 with a sweet tribute, writing, "Another year around the sun together happy 19th to the girl of my dreams."
February 2023: Golden Birthday
The sweet post included photos of the couple.
February 2023: Golden Birthday
The pair's silly side is depicted in one image of Jake and Millie clowning around in the pool
February 2023: Golden Birthday
Jake and Millie snuggle up in a romantic selfie.
April 2023: Engaged
Millie announced the couple's engagement on Instagram, quoting Taylor Swift's song "Lover." The two would go on to celebrate with family and friends at an engagement party weeks later.
July 2023: Six Flags Visit
Millie and Jake enjoyed a day out with her sister Ava Brown, 11, and friends at the Six Flags Over Georgia theme park.
September 2023: Summer Nights
Jake shared this pic in the final days of summer 2023.
November 2023: Glamour Women of the Year
The two appear at the event, where Millie was honored as one of two Global Women of the Year.
February 2024: Happy Birthday Millie
Jake shared a tribute to his partner for her 20th birthday, writing, "Happy birthday my beautiful fiancéI love you so much. Big year ahead."
March 2024: Anniversary
Millie shared this tribute to Jake on their third dating anniversary.
May 2024: Married
After three years of dating, the duo tied the knot in a private ceremony, multiple outlets reported.
August 2025: Expanding Their Family
Over a year after their nuptials, Millie and Jake shared they had a new arrival.
"This summer, we welcomed our sweet baby girl through adoption," the couple announced in an Aug. 21 Instagram post. "We are beyond excited to embark on this beautiful next chapter of parenthood in both peace and privacy."
They concluded, "And then there were 3."