Step-Sibling Rivalry (Finn Wolfhard x Reader)

𝙾𝚑???

Y/n's POV:

I woke up to the sound of music playing,
I blinked scanning the room, only to see Finn
walk out the bathroom in a bathrobe.
" Finn? "
I say sitting up.
" Good morning to you. "
A smile creeping up on his face as he turned around.
That's when everything started flooding back as to what happened last night.
" Finn, I- I'm s-sorry. "
" Hey no, don't worry about it Y/n. "
" Like about last night and- "
" Hey, hey hey. It's alright Y/n/n. "
Finn places his hand on my shoulder,
which calmed me down.
We looked at each other, his dark brown eyes
farting into mine.
" Um, what time is it? "
I ask, immediately breaking eye contact.
" I think it's 7? 7:30? "
Finn's answered, unsure.
" But I'm gonna be honest with you, I should be the one apologizing. "
Finn shakes his head, letting a laugh out.
" Huh? But I- "
" No, Y/n. Listen, okay?
Last night, how do you think you ended up
getting so wasted, to the point
Brand and I had to bring you back to the hotel. "
He explained and I took a pause trying
to remember everything that
happened last night.
" Brand? Wait, even Brand? "
I asked confused.
" Mhm. "
" I don't- I don't recall what- what really happened? "
I stuttered since I really couldn't remember.
" Okay, so.... "

Last Night ~

Finn's POV: 

" Finn! Let's go! C'mon!
Brand is gonna take one more shot with us! "
Y/n happily shouted as the 3 of us
just sat at a bar.
" WAIT, wanna water fall it? "
Brand says with the biggest smile on his dumb face.
" YEAH YEAH YEAAHHH! "
Y/n being Y/n she nodded multiple times
saying yes.
" Holy shit! "
Her bestfriend laughs as she took
the alcohol down.
" Finn! You should have go! "
She suddenly says, pushing the bottle towards me.
" Nah, nahh, I think I'm good! "
I nodded, feeling my head spin a little.
Man this is exhausting...
I feel so...
" WOOOOOOO!!! "
Y/n suddenly shouts cutting me from
my thoughts.

After a few more shots here and there,
the 3 of us made our way to the dance floor.
" I LOVE IT WHEN YOU CALL ME BIG POPPA,
THROW YOUR HANDS IN THE AIR IF YOUS A TRUE PLAYA "
We sang the lyrics to the songs playing,
dancing along to it.
And suddenly this girl or woman?
She looks about 20 plus years old
and that I've never met before, and she starts dancing with me...
" hey handsome, you got a girlfriend? "
She shouts,
her back facing me as she went low..
What the fuck.
" I do actually, yeah.
So if you'll excuse me, I- I gotta- "
I tried stepping away but the crowd just started surrounding us, getting closer.
" Hey, no, no, no, no, no. Don't go?
She won't have to know now, does she?
Here, let me buy you a drink, hm? "
The chick dances closer pulling me by the tie and leading me somewhere.
Our faces were inches away-
She leaned in and i moved my head away, having to end up kissing my cheek.
Fuck.
" I need to go. "
I started hyperventilating, and all I could think of was Y/n.
I miss her.
I want her...
Where is she?
I managed to move and get away from that girl and looked for Y/n, if I could find her...
She disappeared into the crowd along with Brand.
" Fuck. Fuck. Fuck. Fuck... "
I whispered under my breath, but that's when

I spotted Brand
sitting alone at our table.
I immediately run over to him.
" Yo dude, where'd Y/n go? "
I panted as I asked him.
" Finn... What the fuck did you do? "
Brand had a worried look on his face.
" Wh-what? What- what did I do? Huh? "
I speed my words, dying to know
WHAT I DID!!
" Y/n told me you were dancing with some chick at the dance floor.... "
He replied...
Shit..
"And that you... "
He paused his words, now even being able
to look up to me.
" And that I what? "
I question him.
Shit, does he know?...
" And that you kissed her. "
Brand finally looked up, swallowing the lump
in his throat.
" Fuck! "
I seethed through my teeth, kicking the table.
" WHAT ITS TRUE?
I WAS GONNA ASK YOU IF YOU
ACTUALLY DID! "
Brand stands up from his seat, and starts going ballistic before I told him the whole story.
" What!? NO! I DIDNT!
I mean she did- "
" WHAT!?? "
" NO NO NO, NOT LIKE THAT!
SHE WAS ABOUT TO BUT I MOVED AWAY AND SHE ENDED UP KISSING MY CHEEK.
THAT DIDNT MEAN ANYTHING!
You- You know I wouldn't do that to Y/n?
Even when I'm drunk, I can still sorta
control myself.
I didn't- I didn't kiss her. Okay?  "
I end the conversation with.
Thank god the music was far enough from
where our table was.
" Speaking about Y/n. Do you know
where she is? "
" No? Although while she vented about it,
she drank like 5 times as much as you and I did... "
He guiltily says, fiddling with his hands.
" Huh, so you don't know where
she is? "
Brand responding with shaking his head.
I sigh sitting down, trying to think of where
Y/n could've gone.
Both Brand and I called her phone multiple times but now answer. 
Shit, I just hope she's okay...