Torn - Finn Wolfhard x reader

Millies sleepover

Me and Finn Uber home from Waffle House after making up with Millie and as he makes small talk with the driver and I just stare vacantly out of the window. I still don't trust Millie. The way she looks at Finn, the way she speaks to him, it drives me insane. I feel a squeeze on my hand.
"Hey, you good?" Finn asks concerned, his forehead close to mine.
"I'm fine, I just think that milkshake didn't agree with me." I fake giggle, reassuringly squeezing his hand. I don't want to annoy him with the Millie thing, he's probably bored of it.
As he kisses my forehead both of our phones vibrate. I pick it up of my lap.
It's the group chat.

Mills: Hey guys! Sleepover at mine? Xx

The message lights up my screen and leaves a feeling in the pit of my stomach.
"You wanna go?" Finn asks gently.
I exhale, "sure, why not?" I give him a small smile.

Finnie ❣️: Me and Y/N will be there in 20!

Finn gives the Uber guy a new destination and all the others text their responses into the chat. They've all said yes.
The feeling in my stomach won't go away.

~20 MINUTES LATER~

We pull up to Millie's and step out of the Uber. I hear Finn say thanks and I stand gobsmacked in front of Millie's house.
"Jesus Christ." I say under my breath.
"I know, it's pretty nice." Finn says as he stands next to me in front of the beautiful mansion. "You ready to go in?" He puts his arm around me and looks down into my eyes.
"Ready as I'll ever be." I respond dully.

"We're here!" Finn shouts up the stairs.
"We're in my room." Millie shouts back over the loud music playing in her room. I take a deep breath and start to head up the stairs. Finn grabs my hand before I go any further.
"Are you sure you're ready for this, you've only just started talking today." Finn says, his deep eyes full of concern.
"Yeah, I'm good, don't worry your pretty little head about it." I say giving him a sweet smile and tapping his nose causing him to giggle.
"Go on then." He ushers me up the stairs.

I travel across her enormous hallway to the room where the music is being blasted from. As I go in my jaw completely drops. There are like a hundred pillows and blankets strewn across the floor, a crazy huge flat screen on the wall, and the biggest selection of snacks I've ever seen.
"Wow, you guys really go all out, don't you?" I nervously giggle.
"Sure do!" Noah reply's before shoving a handful of m&ms in his mouth.
"Jeez Noah, slow down." Sadie laughs, her eyes meet mine, "Y/N, it's nice to meet you."
"Yeah, same here!" I say excitedly, I can't believe this is my first time actually talking to her. She then pats the empty pillow next to her, suggesting I sit next to her. Finn is already sat between Noah and Gaten.
"We were just about to start watching a movie and then we'll play some games later." Millie announces to me and Finn with a mischievous smile on her face.
"Mills." Finn gives her a dirty look, he mustn't like these 'games' she's talking about.
"What games?" I ask curiously.
Millie chuckles to herself, "you'll see Y/N, you'll see."

Everyone looks really nervous, especially Finn.
I knew this sleepover was a bad idea.