Love Undone || Mattheo Riddle x reader
Warnings: swearing Summary: When Y/N is asked out by her secret admirer, Mattheo can't help but feel jealous.
On their very first day of school, Mattheo and Y/n had bumped into each other just outside the Great Hall. They had caught hold of each other's arms before either could fall and small grins broke out on their faces. That moment could very well be marked as the beginning of an unyielding bond. Their friendship transcended the ordinary. They were two halves of a whole, completing each other in ways only the closest of friends could.
To Mattheo, your relationship wasn’t just that of friends. His feelings ran much deeper, though he was afraid to admit them. But he always thought of you as his girl and he promised himself that one day, you would be.
So, up till 6th year, Mattheo had made it his life’s mission to scare any and every boy that dared approach you- save his own friends, who he knew would never do anything to take you from him. It helped that he was the son of the dark lord- everyone was too afraid of him to try anything. That is, everyone except one stupid ravenclaw.
See, it was just another day in Defense Against the Dark Arts and Y/n found herself seated next to Mattheo as usual. Her fingers fiddled with a small parchment, folded neatly into a square. She slowly unfolded it to reveal elegant handwriting. The letters danced across the page and dramatic swoops and curves and Y/n couldn’t help but smile at the words.
Dear Y/N,
Your laughter is like a melody, and your eyes hold the secrets of a thousand stars. Would you grace me with your presence for a date in Hogsmeade this weekend? Meet me by the Three Broomsticks at sunset.
Yours sincerely,
Your Secret Ravenclaw Admirer
Mattheo, noticing her blushing cheeks, nudged her gently. “What’s got you so red, angel?”
With a shy grin, Y/n slid the paper across to him. Mattheo shuffled closer to her, his arm brushing against her as he read. His eyebrows furrowed at the words, a growing unease settling in the pit of his stomach. His head whipped up to meet her eyes once he finished reading.
He noted the beaming smile on her face. She was happy about having a secret admirer and Mattheo didn’t have the heart to say anything despite his discomfort. He didn’t like the idea of someone else capturing Y/n’s attention like this.
The days leading up to that weekend were a whirlwind of excitement for Y/n. So much so, that she missed the unspoken tension creeping into her friendship with Mattheo. It wasn’t until friday evening that she realised anything was off with him.
They were studying together in the library when Mattheo finally burst out. “Are you sure about this date, angel?” he asked, his voice laced with concern. Y/n looked up from her book, an eyebrow raised at the sudden interjection.
“Yeah. Why wouldn’t I be? It’s just a date.” She shrugged. Mattheo hesitated, trying to put his thoughts into words.
“Right… I just don’t want you getting hurt. Like, what if it’s a prank?” He shrugged, looking at her helplessly.
Y/n felt a spark of irritation at that. “What? I can take care of myself, first of all. Second, is it really that hard to believe that someone might genuinely be interested in me?” She snapped, shoving her books to the side. Her ink pot clattered against the books, threatening to spill over.
She knew she had overreacted a little bit, but it was a bit of an insecurity she had. In her 6 years at school, not a single boy had paid her any attention. So, excuse her for not wanting anything to ruin the first opportunity she had ever had.
The tension hung in the air as the situation escalated. Mattheo clenched his jaw, reaching to stabilise the ink pot.
“I’m not saying that,” he grits out. “I’m just saying you should be carefu-” Y/n cuts him off. “I’m not a little girl, Mattheo. I don’t need you worrying about me like my mother.” She grabs her books and with one last look at Mattheo, storms out of the library.
Mattheo sat, twisting the rings on his fingers. He was mad. Not at you, but at the ravenclaw boy who dared steal you from him. Mattheo was going to blame it all on the boy. “That date is not going to happen.” He mumbled, watching your retreating figure.
<><><><><><><><>
The weekend finally arrived, the weather turning cool and pleasant. The common room buzzed with excitement, mostly radiating off of Y/n. She had never been this excited for something.
Mattheo lounged on the catch, watching as Pansy helped his girl with her last touch ups. He and Y/n had barely spoken since their little argument, simply exchanging morning greetings and tense formalities.
She had asked him what his plans were earlier that day. He had replied that he wasn’t sure, but Mattheo knew. He was going to follow you around all day, making sure nothing happened between you and the ravenclaw.
<><><><><><><><>
He followed silently, pulling his hood up as you walked into the Three Broomsticks. Hogsmeade was a charming village, often serving as a nice spot to relax. But Mattheo felt anything except relaxed at that moment. Pansy and Lorenzo stumbled behind him, both exchanging nervous looks.
Mattheo’s eyes narrowed as Y/n sat down at an empty booth. He scanned the room, looking for anyone who could be her admirer. The door swung open and a tall, brunette walked in. The boy had glasses resting on his freckled face, a blue and silver scarf wrapped around his neck. His smile brightened as he caught sight of Y/n and made his way over.
Mattheo scoffed to Pansy and Enzo, “Don’t tell me that’s the guy she’s going on a date with.” His frown deepened as her cheeks turned red. She stood up to greet the boy and Mattheo’s nose scrunched at Y/n’s giddiness. She was acting like a little schoolgirl.
“Ridiculous,” he mumbled under his breath. He watched the boy carefully, waiting to make a move against him. Mattheo muttered a small spell as the boy moved to sit, pulling his chair out from under him. The poor ravenclaw fell to the ground, his scarf slipping from his neck.
Mattheo grinned in satisfaction as her eyebrows shot up. The boy groaned but got up, flashing a charming smile. He cracked some joke, pulling the chair closer. Lorenzo snickered at the failed attempt. “Oh shut up,” Mattheo scoffed, pointing his wand at the boy again.
He sat there for the entirety of the date, muttering spells and jinxes at the boy. By the end of the hour, the embarrassed kid nearly rushed out the door. Y/n sat shocked in her seat, disappointment swirling inside of her. She looked around the shop and caught sight of her giggling best friend.
She frowned, making her way over to him, her arms crossing over her chest. “Really? You sabotaged my date?” She scoffed.
Mattheo leaned back in his chair, swinging one arm over the back. “What if I did, angel?” He smirked coolly.
“You’re such a jerk.” she sneers. “What is your problem, huh? Why can’t I have one date to myself?”
Mattheo’s expression darkened. He stood up from his seat, stalking closer to her. “Bloody hell, Y/n. Can’t you see?” he scoffs. “I can’t stand seeing you with that jackass.”
The confession hung in the air, freezing time as Y/N processed the weight of Mattheo's words. The realisation hit her with a mix of surprise and clarity. The tension between them, the jealousy, and the unspoken emotions—they all made sense now.
"Why didn't you say anything before?" Y/N asked, her voice softer, the anger giving way to curiosity.
Mattheo looked up, meeting her eyes. "I was afraid of ruining our friendship. I didn't want to risk losing you altogether."
Y/N took a moment, absorbing his words, then whispered, "You’re an idiot, I've liked you since our third year." Mattheo's eyes widened in surprise, hope flickering within them.
With a tender smile, Y/N continued, "I thought you didn't feel the same way, so I kept my feelings to myself. But if you're willing…" she drifted off, a hopeful smile creeping up her face.
“Are you kidding?” Mattheo grins, relief and joy flooding through him. He grabbed her waist, pulling her into his chest. Hishead dropped to capture her soft lips on his own. His hands dug into the fabric of her top. He let out a chuckle as she tugged at his hair.
When he finally pulled away, he couldn’t stop staring at her. Her cheeks were even redder than before- if that was possible, and her clothes were already getting rumpled.
“Y/n? Be my girlfriend?” He whispered, letting his forehead press against hers. “Yes.” She breathed back and Mattheo reached down to press another kiss to her lips. Her wonderful, soft lips.
