Step-Sibling Rivalry (Finn Wolfhard x Reader)

𝙳𝚘 𝚖𝚎 𝚊 𝚏𝚊𝚟𝚘𝚛 𝚠𝚒𝚕𝚕 𝚢𝚘𝚞? ( 𝐗𝐈𝐈𝐈 )

Finn's POV:

" So it'll be next week? You, kids, are ready, right? With your attire and you know? "
Our mom asked us.
Letting us know that their wedding was moved a week since they needed time
to prepare the reception.
Giving Y/n and me some time together.
" Yep, I'm aaalll set mom. "
Y/n replied, leaning back in her seat as she took a sip from her fruit shake.
" Finn, honey? How about you? "
" Finn... "
I felt Y/n nudge my leg.
" Huh? "
I sat up straight, and turned my head to her.
She then gestured to mom.
" Finn, are you all set? "
Y/n's mom asked me.
" Oh, yeah, yeah. "
I nodded my head a couple times.
We all chatted as we finished our food and Y/n excused herself from the table.
Then getting a text from her to follow her back to our hotel room.

Y/n ❤️

Y/n:
Aren't you gonna follow me?
See ü ;)
Read...

Basically leaving her on read.
Then excusing myself from lunch and made my way back to our room.
I entered the room, checking the time on my phone.
It was 1:16 pm, I looked up to see Y/n
nowhere in our room.
Where is she?
She did go in our room, right?
I walked further in the room to see the bathroom door open.
I walked in and saw her by the mirror,
taking a bit of her make up off by the looks of it.
She's so beautiful.
" Hey. "
She smiled at me.
" You told me to follow you? "
I said.
" Mhm. Now we're going out to the beach. "
She chuckled walking out, and getting 2 towels
from the closet.
" Y/n, I don't really wanna swim now,
it's still pretty hot and- "
" Oh c'mon, Finn?  Let's just gooo. "
She dragged me out our hotel room, and
went in the elevator to apparently go to the beach?
" I'm serious, I don't wanna swim yet. "
I moved my shades up to my head.
" Andd? "
She answered.
" What do you mean and? I don't want to
swim yet. "
I told her and she was smirking.
" What now? "
I asked.
" You're still swimming with me. "
She said.
" What? No? I just said I didn't want to. "
" Nahh, you still are. "
" No, I'm not. "
" Yeah, you are. "
" No Y/n, I'm no swimming. "
" Okay. "
" Deadass serious, I'm not. "
" Sure. "
" Y/n stop. You can't make me. "
I rolled my eyes.
" Oh really? "
She smirked going closer to where I was.
" Yes, really. "
I coughed while she stopped walking, she then turned her head and,
" Oh look we're here. "
She pointed to the numbers above the door,
hearing her sigh.
She then grabbed my hand and lead me outside where the beach was.
" Y/n it's hot. I'm going back inside. "
I tried to stop walking but she continued to pull me.
" Please, Finn?? Just for a little while?
Besides mom and dad said we should spend some time together. "
She slumped her shoulders, which sort of made me feel bad.

I sighed, taking her bag and my towel from her and walked to where the beach was.
I could feel her grin from behind,
making me smile too.
I set the things down in a small hut that had 2 chairs and a large umbrella for shade.
" I'll catch up. Just got in ahead. "
I told her, as she nodded.

I couldn't keep my eyes off her as she stripped her clothes off, revealing her hot, slim, sexy body that had a black 2 piece begging
to be ripped off...
I could feel an erection coming....
" Shit.. "
I whispered, takes the folded towel and placing it over my crotch.
She raised and eyebrow at me and asked.
" What's wrong? "
Letting her hair down.
" Nothing. Uhm you should go swim. "
I answered.
" Oh, okay. Don't take too long! "
She smiled as she ran to the waves and into the ocean.

It's been 10 minutes and now I'm thinking I should go swim with her now.
I stood up from the chair, taking my blazer that she told me to bring leaving me shirtless, followed by my shades and slippers.
Then I walked to where Y/n was, she was somewhere mid shore.
" Hey. "
I smiled walking closer to the water.
" Took you long enough? "
She smiled, taking my hand and pulled me into the
water.
" Woah, woah. Slow down. "
I laughed with the water already by my waist.