Step-Sibling Rivalry (Finn Wolfhard x Reader)

𝙸 𝙻𝙾𝚅𝙴 𝚈𝙾𝚄

Bare in mind, this is quite long! ( heads uppp )

Y/n's POV:

" So, you kids excited for the wedding "
My mom asks Finn and I.
It was only the four of us at the table.
Me, my mom, Finn's Dad,
and last but not least, Finn,
We were waiting for both Brand and his parents
to arrive.
" Yeah mom, of course! "
I smiled, taking a sip of my water.
" We're gonna be a real and proper family now. "
Our dad said, putting his arm around my mom's chair as we see the both of them
exchange a kiss.

Shit, will I have my last name changed to Finn's
name?
Wolfhard?
Y/n Wolfhard.
Eh, it doesn't sound bad?
Oh-

" How's the vacation so far? You guys okay,
all set, hm? "
My mom asked us, I zoned out from my thoughts.
" Yeah, we're all set. "
" Yup! "
Finn and I answered at the same time.
" Oh look, they're here! "
Both our parents stand up from their seats to greet Brand and his parents.
We actually had a pretty good time, and I guess you could say
Finn and Brand were finally warming up to each other.
Sort of?
Anyways they discussed more about the wedding, pitching in some
last minute ideas as we ate dinner.

After dinner,
Brand has been dying to try this Ice Cream
that was apparently only made here
on this beach.
" Which I don't think is true. "
Finn whispered in my ear while Brand
was skipping ahead like a little kid,
awaiting his ice cream.
" Slow down, Brand. It's not like
the store is gonna close. "
I laughed, the 3 of us making our way to the place.
Once we got there, Brand ordered his Ice cream, finally getting
what he wanted. 
" Ya sure you guys don't want some?
It's like, INSANELY GOOD! "
He says, taking another spoon full.
Finn cringed on the way Brand was practically demolishing it.
" We're good. "
He answers for me and I was indeed
full from dinner.
" C'mon there's always room for dessert. "
Brand smiles.
" I'm alright, Brand. Thanks. "
I re-assured him as we sat on the table that was right next to the stall.
The 3 of us talked for awhile, and I wanted
to head back to the room already.
" You guys go ahead, I'll follow. "
Brand moves his hand in a shoo kind of action as we stood up from the table.
"Why? Where are you going? "
I questioned my delusional bestfriend.
" No where, I just don't wanna head back yet.
You- You guys go. "
He answers, smiling.
" Ya sure, dude? "
Finn joined in the conversation.
" Yeah, yeah!
Go swimming or something. I'm just gonna stay here for awhile. "
He replies and with that, Finn and I left hand in hand and headed back to the hotel.
" Don't have sex! "
We heard him shout behind us.
A few people giving us looks as we walked back.
Damnit Brand??

" Is he gonna be fine? "
Finn asks before we go in the room, worried.
" Yeah, it's Brand. He's gonna be alright. "
I answered, ushering to the room to change into my swimsuit since it didn't sound like
a bad idea to go night swimming.
" Okay, well go get changed. "
Finn gives me a quick kiss before I head into the bathroom.

Finn and I walked out the hotel and quietly headed down beach.
Us being the only people there, the moon being our only light source.
I look to Finn, seeing him pull his shirt AND trunks off
and setting them aside.
Swallowing the lump in my throat,
I knew what was gonna happen.

Finn's POV:

Y/n laughed as she almost tripped over some rocks that we tried avoiding.
Seeing her smile just made me feel all giddy inside.
Then an idea popped into my head.
I took not only my shirt off but also my trunks.
I looked to Y/n, I could sense that she was nervous which I found cute.
" Ready? "
I ask, seeing that that cute mischievous smile
form on her face.
" As I'll ever be. "
She answers and with that she strips her bathing suit off
and started running into the ocean.
We went further from the shore, to point where our waists were submerged,
splashing each other.