Sadie Sink Reveals Her First-Ever Kiss Was with Stranger Things Costar Caleb McLaughlin

Mandatory Credit: Photo by Eric Charbonneau/Shutterstock (9327833z) Caleb McLaughlin, Sadie Sink Netflix toast to celebrate the 2017 Award Season Nominees, Los Angeles, CA, USA - 20 Jan 2018
Mandatory Credit: Photo by Eric Charbonneau/Shutterstock (9327833z) Caleb McLaughlin, Sadie Sink Netflix toast to celebrate the 2017 Award Season Nominees, Los Angeles, CA, USA - 20 Jan 2018

Eric Charbonneau/Shutterstock

Sadie Sink had a giant personal milestone on screen.

The Stranger Things actress shared her first kiss with costar Caleb McLaughlin for the series, she revealed to W Magazine.

"It was with Caleb McLaughlin, who plays Lucas," Sink, 20, told the outlet. "We were filming. You can see it on Netflix!"

Sink opened up more about the moment — which wasn't exactly romantic, given an entire film crew was on standby. "We were both awkward, but it was also funny because all our friends were there and all these extras and lights and music. It was nerve-wracking at the time, but I look back now and can laugh about it."

RELATED: Sadie Sink Opens Up About 'Scary and Sad' Goodbye to Stranger Things as Max's Fate Hangs in Limbo

Editorial use only. No book cover usage. Mandatory Credit: Photo by Netflix/Kobal/Shutterstock (9309863aq) Sadie Sink, Caleb McLaughlin "Stranger Things" (Season 2) TV Series - 2017
Editorial use only. No book cover usage. Mandatory Credit: Photo by Netflix/Kobal/Shutterstock (9309863aq) Sadie Sink, Caleb McLaughlin "Stranger Things" (Season 2) TV Series - 2017

Netflix/Kobal/Shutterstock

The Stranger Things kiss is far from the first time two costars have shared a first intimate moment. That '70s Show hosted Mila Kunis' first kiss — to now husband, Ashton Kutcher. Selena Gomez also previously recounted her first kiss with Dylan Sprouse while filming the Disney series The Suite Life of Zack & Cody

Unlike the other series, Stranger Things takes a darker tone. Sink plays Max and McLaughlin, 21, plays Lucas — two friends in the Hawkins, Indiana, group of teens that get sucked into an otherworldly mystery. Season 4 last saw the friends-turned-lovers estranged. Max felt danger nearing and pushed away the ones who wanted to protect her.

RELATED: Why Millie Bobby Brown Is Afraid to Return to Stranger Things After Filming Enola Holmes 2

However, Lucas may have helped save Max's life in the end, when she escaped the vicious Vecna just moments from her death. The season concluded with uncertainty for Max, who was last seen in a coma. Her character is set to return to season 5 — despite a question mark in her survival.

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Stranger Things is set to return for one final season, though there's still no word on when it can be expected on Netflix.