"THAT'S MY SISTER RIDDLE"
Slytherin!Nott Reader (fem) x Mattheo Riddle
Blurb: Mattheo and your brother have been friends for as long as you can remember. But what happens when all of the sudden you don’t feel friendly feelings towards Mattheo anymore, you feel something different.
Some good old fashioned mutual pinning and fluff, domestic slytherins vibe because my babies deserve it.
Warnings: drugs and alcohol reference/usage, (play) fighting, teasing and mutual pinning, pet names (sweetheart, my love), weird ass tense used, rusty writing skills, OOC Mattheo and possibly the other Slytherin boys too. I may have missed warnings!
AN: Omg I’ve been thinking about this little oneshot for days now. Finally wrote it! This is the first oneshot I’ve posted (on here and & in a very very long time) Not edited or beta’ed or anything like that. I literally wrote and posted it within an hour. Feedback is always welcome, and I hope you like it, thanks and please be kind <3
Word Count: 1400
I straightened out my green and silver plaid skirt before leaving my dorm and heading to the Slytherin common room. My steps echoed along the cobblestones of the dungeon. The shadows were always long in the Slytherin dorms, it was a wicked combo of no natural light and the ever-lit candles posted against the walls. There was a faint echoing of dripping water coming from deeper within the dorms. A chill went down the back of my neck and I started walking a little bit faster.
The light at the end of the tunnel spread farther as I moved closer. The dripping echo was drowned out by the sound of laughter and a crackling fire. The common room was popping tonight. I took my last step before exiting into the light, I had to blink my eyes a couple times to get readjusted to the light.
My eyes sped across the room. I headed towards our normal corner; it looked like I was the last one to join. My brother was lounging in an armchair, legs thrown over the side. Enzo was curled up in the armchair directly to his left. Blaise and Pansy were sprawled on top of each other in one of the love seats. Draco occupied the final armchair with his feet tossed onto of the coffee table. Matteo was stretched out on the final love seat; he gave me a smirk as I made my way over. The fire flickered behind my friends lighting them up in a flickering warm glow.
Mattheo’s big brown eyes seemed to sparkle in the light, a rush of elephants trampled through my stomach at the look. He held a glass of suspicious looking dark liquid in one hand and his other was spread out along the back of the couch. “Hey, Sweetheart” he drawled out at me. Theo flipped his head towards me at Mattheo’s voice.
“Took you long enough.” He scoffed at me. I tsked him, flicking Theo behind the ear once I was close enough.
“Be nice.” I said to Theo, earning a light chuckle from Enzo and Pansy. I looked back at Mattheo to see he was already looking at me. I gave him a shy smile looking away quickly.
Mattheo shifted on the couch. “Come on over, I got lots of room.” He said with a sultry voice. I felt my cheeks redden as I walked around the coffee table.
Theo and Mattheo have been friends since before our Hogwarts days. No, they haven’t been friends, they’ve been best friends, brothers even. For as long as I could remember Mattheo’s been around. Mattheo and I have always been friendly with each other, but the last year things have been starting to change. It started as longer glances here and there and turned into lingering touches and secret smiles together. Theo would lose his mind if something happened between his best friend and his sister. I took a seat beside him. It was easy between us when we were together everything happened automatically. I didn’t have to think around him. His weight shifted on the couch to match me. I slowly slid into his side, his arm curling around my shoulders on the back of the couch. My hand drifted to his knee and Theo gave us a look but didn’t say anything.
We shared a sweet smile, his big brown eyes gazed into mine and sent butterflies to my core. We were close enough that I would just have to lean over, and I could kiss him. I snapped my head to Enzo as the deck of cards he was shuffling exploded all over our corner. My hand shot up as I giggled at the mess he made. Various chuckles and giggles went around the circle as Enzo grumbled and waved his wand to collect all the cards.
“That wasn’t supposed to happen” Enzo grumbled as he reshuffled. Mattheo smiled into my hair and pulled me a smidge closer. I smirked as Theo made a huffing sound and shifted beside us.
“It’s okay Enzo, mistakes happen.” Pansy teased.
“Oi, bugger off or I’m gonna give you shitty cards” He shot back at her. Everyone laughed as Draco stood up.
“I’m going for a refill, any requests?” All at once everyone shouted out a different drink at Draco. He wrinkled his nose at us all, “Never mind, I’m just bringing the firewhiskey back and you gits can deal with that.” Enzo passed out the cards as we took shot after shot together.
By midnight we were all getting rowdy and loud. We finished the first bottle of firewhiskey and moved on to Salazar knows what. It all burned as it went down and made me gag after. Pansy kept laughing at me like she wasn’t making the same face.
Blaise abruptly sat up from his chair, dropping Pansy onto the floor in front of everyone. I let out a snort as she laid there for a second bewildered. “Oi, I just wanted to sat that I really love you lot. I don’t know what I would’ve done without you guys.” Blaise’s long lashes clumped together as moisture started building in his eyes.
“Awe babes!” I shouted out. “Blaise don’t cry, or I’ll cry!” I gave him a dramatic pout that had him laughing at me. I’m sure the firewhiskey was making it much funnier than it was.
“We can’t have that happening, now can we, my love?” Mattheo whispered in my ear as his hold grew tighter on me. As we were getting drunker Mattheo was getting more and more open with his touchiness. “I know what will cheer you up.” He said in my ear. I turned my head to give him a curious look. The room was spinning but I was able to focus it enough to see the big smirk he gave me before he announced to the entire group, “You know, I think we should go out sometime.” My jaw dropped at him. Theo’s jaw dropped at him. Pansy let out a loud whoop once she processed what he said.
I shook my head at him and wrinkled my nose. “No, I don’t.” I looked over at my brother. “I don’t date my brothers’ friends.” Theo gave me a nod and crossed his arms. He looked less than impressed with his best mate. Mattheo captured my attention again and he gave a shrug.
“Aw that sucks… guess I’ll have to kick his ass then.” The whole group let out a laugh at Mattheo’s teasing. Theo lit the end of his blunt waving his wand to spell away the smoke. He made a face at Mattheo.
He blew out smoke saying, “or I’ll kick yours Riddle” He gave a devious smirk and Mattheo laughed at him. I let out a little giggle as Mattheo let go and launched himself at Theo. Enzo made quick work of grabbing the lit blunt from Theo and passing it around as the two best friends rolled around on the floor. They were throwing fake punches and elbows at each other.
I giggled bringing the blunt to my lips. As I exhaled Mattheo managed to flip over Theo. He sat on my brother and lifted his hands in the air like he won. “Thank you, and now for my prize!” His eyes locked on me as he got off Theo.
Mattheo sauntered over and braced an arm behind me on the couch as he leaned down. His face was an inch away from mine. My breath stuttered as his eyes kept drifting back from my eyes to my lips. This is it I thought. This was finally going to be the moment he kisses me I thought until I noticed the devious look in his eye. He plucked the blunt right from my lips, drawing it to his mouth to take a lengthy inhale. He backed away from me with a teasing glint in his eye as he took his seat beside me again.
“Stay away from my sister Riddle” Theo called out from where he was still laying on the floor. Mattheo shot me a wink the others couldn’t see.
“We’ll see.” He said quietly enough that I was the only one who heard him.




















