During that, newcomer Sadie Sink recalled how her on-screen kiss with Caleb McLaughlin wasn't on the script, and that she was "uncomfortable" in doing the scene.
She pointed out how the director Ross Duffer asked her if she was ready for the kiss.
"I’m like, ‘What? Nope! That’s not in the script,'" she said. "'That’s not happening.’ And so the whole day I was stressed out."
"You reacted so strongly to this. I was just joking," replied Ross Duffer. "And you were so freaked out I was like 'oh, well, I gotta make you do it now.' That’s what happened. That’s why it’s your fault."
Some fans didn't appreciate it at all.
"I mean, of course I was nervous because it’s a first kiss, right? But I never objected to [it] or felt pushed into anything. I always felt comfortable and the Duffer Brothers, they do the best job. And always create a comfortable space. And if I felt uncomfortable with anything, I wouldn’t have done it."
Watch the scene in question below: