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2023-03-12
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Jealous Boy

Summary:

Sebastian Sallow is a very jealous person. No matter how hard he tries, he just can't shake the feeling. Sebastian is especially jealous of you, and he will do anything to make sure you're his. Because if he can't have you? No one can.

Notes:

This is my first time writing smut so please bear with me! Hopefully, I did an alright job LMAO. Technically dub-con tag because Sebastian uses a lust potion on reader.

Work Text:

You were the most popular witch at Hogwarts. You were kind and would do anything for anyone and that is what caught Sebastian Sallow's attention. He watched you frequently, and never once did he see you be rude to someone (a trait he didn't have). He noticed how your nose would crinkle when you would laugh especially hard, and how you always had a soft smile when speaking to someone.

He also noticed that the fellow boys of your year were practically obsessed with you. There wasn't a minute that went by that a horny teenage boy wasn't gawking over you. It made his blood boil. How dare they look at his girl like that? It was almost as if they were begging for an Unforgivable to be used against them. That is when he hatched a plan to make sure that everyone would know that you were his. There would never once be another question about it.

Sebastian Sallow was a very attractive young man, in your opinion. His brown hair was always perfectly styled in its own fluffy way. His tanned skin was beautiful, the plethora of freckles that littered his body only making him more so. You hadn't spoken much over the years, but every time you did, it was always rather pleasant. You would always meet his gaze from afar and give him a soft smile. Unbeknownst to you, however, that smile always made his heart flutter.

You knew you were rather popular and that many people were interested in you, but you only ever had an interest in Sebastian. He was cool, calm, and collected. You had only ever seen him get angry in front of you once, and needless to say, you needed to remove yourself from the situation to calm yourself. You didn't understand why seeing him so angry made you feel a certain way, but it did. You could only ever wish you would be able to see it happen again.

Garreth Weasley was probably one of your more... determined suitors, and the three of you had Defense Against the Dark Arts together. Professor Hecat paired you and Garreth together, which already royally pissed Sebastian off. Sebastian was the best duelist of your year, why wouldn't she pick him? Why would she pick the neanderthal that can't even get his own concoctions correct? Sebastian's last straw, however, was when Garreth tried to 'correct your spell movement' by standing behind you and holding your hands.

"Weasley, I do believe her spellcasting was perfectly fine," Sebastian barked.

Garreth looked up at the brunette in surprise, "I was just trying to help. Wouldn't want her to get herself into a bind."

"I'm sure she would do perfectly well in a duel without your advice," Sebastian said, narrowing his eyes.

You looked at Sebastian in surprise. You had never expected him to defend you in such a way, "Sebastian, it's okay. I'm sure he meant well."

"Class is dismissed!" Professor Hecat announced. The rest of your classmates filed out of the classroom, the only ones who stayed were you three.

"I highly doubt it with the way he was staring at you."

"I don't know what your problem is, but-" Garreth was cut off by Professor Hecat clearing her voice. He scowled at Sebastian and reluctantly made his way out of the classroom.

Sebastian stomped over to his desk and grabbed his things. You carefully made your way over to him, not wanting to upset him even more.

"Sebastian, are you okay?"

"Fine, why?" He snapped.

"You came up out of nowhere and started yelling at him, I was just wondering why?"

"I'm getting real tired of seeing those pervy boys all over you like that. You deserve to be treated better than that. They just think of you as some piece of meat that can be passed around willy-nilly. I would treat you better than that."

You were taken aback. You never knew he felt that way about you, and it made your heart soar. It seemed Sebastian realized what he had said, and his face flushed a dark red.

"I-I... I didn't mean..."

You smiled softly, "It's okay, Sebastian."

He looked at you and clenched his textbook tightly. With a soft sigh, he said, "Would you maybe want to go on a trip to Hogsmeade with me? It would be my treat."

Your soft smile turned into a bright one, "I would be delighted to go with you."

You two made plans to go that Saturday, then went your separate ways. Sebastian smirked to himself. This was the perfect opportunity for his plan to be put into action.

 

-

 

Saturday came and you were ecstatic. You were going on your first, real date and it was with Sebastian Sallow, no less. He was Howarts' heartthrob, yet no girl ever seemed to be good enough for him. No one except you, apparently. You got up early and made sure you looked perfect for him. You did your hair and put on your best outfit. You anxiously awaited the time you were supposed to meet at Hogsmeade. You couldn't take the anticipation any longer, however, and decided to head there early. Early is better than late, right? It seemed Sebastian had the same idea because when you strolled up to the doors of The Three Broomsticks, he was already there.

Sebastian smiled at you, "It seems great minds think alike."

You looked the boy up and down happily. He looked very nice outside of his Hogwarts uniform, "It seems so. Shall we?"

Sebastian opened the door for you, and you two sat down at a table off in the corner. It was as if you two were in your own little world, not to be bothered by anyone.

"You look stunning," Sebastian complimented.

"You clean up right nice yourself, Sallow."

"Thank you, love. Would you like a butterbeer?"

"Yes, that would be perfect! I'm going to go to the washroom, right quick. I'll be back."

As you walked off, the only thing Sebastian could think was this was his chance. This was finally his chance to make you his. Because if he couldn't have you, no one could. Sebastian ordered two butterbeers and once they were delivered to the table, he made sure no one was looking. Sebastian poured a Lust potion into your butterbeer that he brewed himself. He was a much better potion master than that bastard Weasley, so he knew it would work. Sebastian anxiously awaited your arrival and smiled brightly at you when you came back.

"Oh, I hope they haven't been sitting here too long."

"They just got here, don't worry."

You smiled at Sebastian and took a sip of your butterbeer. It tasted slightly different than usual. Perhaps a bit sweeter.

"I wonder if Sirona made a new batch recently. It tastes a lot sweeter than usual," You commented.

That meant it was working. The potion was supposed to taste very sweet to the drinker. "Does it not taste good? We can go somewhere else if you'd like," Sebastian offered.

You waved him away, "No, no! It tastes amazing as usual, it just tastes a little different. I want to stay."

Sebastian nodded and changed the subject. Over the course of the conversation, however, you felt your skin start to flush. "Is it hot in here to you?"

"No, love, it's not hot in here. Are you feeling alright?" Sebastian asked, pressing the back of his hand to your cheek. As soon as he touched you, it felt like electricity was flowing throughout your body. It felt good. You sighed in contentment as he moved his hand to your forehead. When he withdrew his hand, you had to hold back a whimper. What is wrong with me? You thought to yourself.

"You feel fine. Are you sure you don't want to leave?" Sebastian asked.

"I just want to be with you," You sighed. You didn't understand where your sudden forwardness was coming from, but it didn't seem like Sebastian minded.

"We can go back to Hogwarts if you'd like. Continue our time there?"

You nodded happily. Wherever Sebastian wanted to go, you were sure you'd follow. As you both gathered your things, Sebastian went off to the washroom as well. You waited anxiously for his return. You felt cold and empty without him beside you. It felt wrong. While he was away, Garreth came up to you.

"Hey," He greeted you quickly.

"Hello, Garreth," You said dismissively. You had no interest in speaking with him right now. He was the furthest thing on your mind at the moment.

"I saw Sallow put something in your butterbeer."

You snapped your head towards the redhead in surprise, "Excuse me?"

"He put something in your butterbeer. A potion of some sort. I don't think you should go back to Hogwarts with him. I think you should stay with me until whatever he spiked your drink with wears off," Garreth said, grabbing your hand.

You were taken aback. There was no way Sebastian would do something like that. Although you did feel a little funny, it was nothing you hadn't felt before. You were an adult, after all. It was normal for you to feel that way towards someone you like.

"Garreth, I don't think-"

"Weasley!" A voice snapped.

Your head whipped towards the voice and you saw a very angry-looking Sebastian. His sleeves were rolled up and he had a look on his face that could kill. He looked delicious.

"I thought I made it clear that she didn't need your incessant presence around her," He snarled, standing in between you two and ripping Garreth's hand away from yours.

"I saw what you did, Sallow. I don't know exactly what you did to her, but I know you don't have good intentions," Garreth snapped.

"I did nothing to her. She agreed to come on this date with me, and she agreed to go back to Hogwarts with me. It's almost as if she's interested in me, and not you. It's not a hard concept to follow."

Garreth got close to Sebastian's face. Although Garreth was slightly shorter than Sebastian, the concept didn't seem to bother him at this moment, "If anything happens to her, I swear..."

"You swear what?" Sebastian said, his eyes glowing dangerously.

It was a terrible time for a familiar feeling to be pooling in your underwear. Sebastian was already looking amazing today, but seeing him angry and defending you only made him ten times more attractive to you.

"There will be no fighting in here! You three, get out, now. Don't make me tell the headmaster about this," Sirona warned.

Garreth scoffed and shook his head, stomping out of the establishment. Sebastian turned around towards you and sighed angrily, "I'm sorry about that, darling. I just can't stand him touching you."

You looked up at the boy, dazed. You couldn't even think straight anymore, too turned on to form any coherent thoughts, "I-It's okay, Seb."

Sebastian's heart fluttered at the nickname you used for him. From what he was able to observe over the years, you rarely used a nickname for someone. They had to be rather special to you. The Lust potion was only supposed to make you feel a sexual attraction towards him, but from what he could tell, it was amplifying feelings you already had for him. He felt his pants become tighter at the thought.

"Come, let's go back to Hogwarts, shall we?" He said, reaching out his hand for you.

You laced your fingers with his and all you could think about was him pinning you against your bed, thrusting in and out of you with your hands laced together over your head.

"You alright?" He asked with a slight smirk. You had zoned out and your face had become a light shade of pink.

"Y-Yes, fine. Let's go."

The walk back to Hogwarts was excruciating. Trying to conversate with him was nearly impossible due to your clouded thoughts. The way he would squeeze your hand every now and again was killing you, and the fact that the veins in his arms were visible to you because of his shirt sleeves still being rolled up... The Cruciatus Curse would've been more forgiving than what you were experiencing. All you wanted was for Sebastian to relieve you of your feelings.

When you finally made it back to Hogwarts, it was almost time for curfew. "Shall I walk you back to your Common Room?"

You sighed softly, "I wish we could continue to spend time together. Forgive me for being so forward, I've just had a really good time with you today." You gripped his arm softly and Sebastian had to hold back a groan.

"Well, I do have someplace else we could spend time together, if you'd like," He offered. You nodded your head enthusiastically and he smiled at you.

"You cannot tell anyone about this place, understand? I think Ominis would murder me if he ever found out I told anyone."

"I promise, I won't tell a soul."

"Good girl," He praised. You let out a soft whimper and prayed to Merlin he didn't hear that. He did.

You made your way to the Defense Against the Dark Arts tower and then went over into a corner. You were about to ask what Sebastian was doing when you noticed he was opening a secret door. You eagerly followed him in, and a dungeon-like room was revealed to you. Training dummies were littered around the room, along with some old boxes and a couch.

"This is what I like to call the Undercroft. No one will bother us here."

"Is this a place only you and Ominis know about?"

"Indeed. It's a secret kept in the Gaunt family, so, as I said, darling, keep it hush."

"Of course, Sebastian."

He motioned for you to follow him over to the couch, and you happily obliged. You hesitated, however, when he patted his lap.

"Y-You want me to sit on your lap?" You asked.

"Is that alright? I don't want to make you uncomfortable."

Of course, it was alright, it was all you were thinking about for the past few hours. However, there was no way you were going to let Sebastian see how eager you were. You hesitantly made your way over to him, and you straddled his hips. He smiled softly at you.

"You really do look beautiful, love. You look stunning every day, though," Sebastian said, brushing your hair behind your ear. Goosebumps rose up on your skin and you held back a shiver.

"You know, I've always fancied you," He said softly.

"R-Really?" You ask, shocked. You would've never known he felt the same way.

"I have," He smiled, resting his hands on your hips, "It's killed me over the years seeing so many boys fawn over you."

"I never paid them any attention," You said, hesitantly wrapping your arms around his neck.

"I know, darling. That's what makes you so special," He said, his eyes flickering back and forth from your eyes to your lips.

Your breath hitched in your throat as he started to lean in. You eagerly met him halfway, kissing him softly. You pulled away after a short moment, and immediately felt the need to kiss him again. So, you did. You settled into his lap more, and kissed the brunette again, this time with more confidence. The kiss quickly went from soft to hungry. His tongue lightly swept over your bottom lip and you immediately granted him access, fighting for dominance. His hands slid from your hips to your ass, grabbing tightly. You let out a soft moan when you felt yourself grind against him. Sebastian pulled away, his lips puffy and pink. He lightly tugged on your shirt, asking for permission to remove it. You eagerly nodded, and he ripped it up and over your head. Sebastian groaned when he realized you weren't wearing a bra.

"Heavens, you're gorgeous," He commented, immediately leaving trails of kisses down your neck onto your chest. You whimpered when he grabbed one breast in one hand and attached his mouth to the other. He lightly kissed and sucked your nipple, and massaged the other in his fingers making you squirm.

"S-Sebastian," You moaned.

"Yes, darling?" He smirked.

"More," You begged.

He smiled wickedly at you and laid you gently back on the couch. He quickly took his shirt off and you couldn't help but stare. He was rather muscular and the beautiful freckles that littered his face graced the rest of his body. Near the waistband of his pants was a neatly trimmed happy trail. Sebastian pinched the back of your thigh, "Staring is rude, love."

"I can't help it," You whined, slightly rubbing your thighs together to relieve the unbearable pressure you'd been feeling for the past few hours.

Sebastian grabbed the waistband of your skirt and lifted your hips, tugging it off and throwing it to the side. He made eye contact with your core and couldn't help but gawk. You were absolutely soaked.

"I haven't even touched you properly and you're already dripping for me," He teased.

"Sebastian, please," You whined.

"So whiny," He tsked, "What if I want to take my time with you?"

Sebastian lightly ghosted over your core and you shivered, "P-Please... I need you."

He peeled your underwear away from you and felt as if he'd died and gone to heaven. He knew you were beautiful but seeing you so vulnerable in front of him... Seeing you so worked up, knowing it was because of him. It was an entirely new feeling. You went to cover yourself up in embarrassment but he grabbed your hands, pinning them above your head.

"Don't. You're gorgeous," He said, kissing you deeply.

Sebastian decided he would tease you no longer, and he slowly trailed his hand from where he bound your wrists, down to where you needed him the most. He lightly rubbed your clit with his thumb and you moaned into his mouth. He smirked and rubbed circles, this time with more pressure. Your moans became louder and he smiled wickedly.

"You sound heavenly," He said, sucking a place on your neck and sliding a finger into you.

"Sebastian!" You moaned. He felt amazing and it was only one finger. You needed more. You needed him.

He smiled against your skin and started to suck another place onto your neck, slowly adding a second finger. He moved expertly in and out of you, hitting just the right spot every time. Your breathing became heavier and you started squirming in his hold.

"Are you already going to cum?" He teased. You nodded quickly, whining loudly. "Am I making you feel that good, baby?"

"Yes! Please let me cum!" You begged.

"Hold it," He said darkly, kissing you down your chest and stomach, finally letting your wrists go.

"Seb, please!" You begged, clenching your newly freed hands tightly by your side.

"I said hold it. Don't make me punish you, now," He warned, kissing and sucking places on your hipbones.

You whimpered loudly. You didn't want to disobey him but he was just so good. Suddenly, you let out a loud cry. Sebastian was kissing and sucking on your clit and you swore you saw stars. With his fingers moving in and out of you at an expert pace, and now his mouth on you, it was too much.

"S-Sebastian..." You warned.

Sebastian decided you had had enough and looked up at you from his place in between your thighs, "Cum."

Immediately you let go, moaning loudly and gripping his hair tightly, causing him to groan out as well. Your legs shook violently and your chest was heaving, but he didn't stop pleasuring you. Not until you started jerking away from him in overstimulation. He slowly removed his hand from you and kissed up your chest and your neck. Your breathing had finally slowed and he looked at you, his eyes completely blown out.

"Good?" He asked smugly. You nodded dazedly.

He began to kiss you again, this time much slower, but still with the same burning passion as before. You wrapped your arms around his neck and your legs around his waist and that was when you realized he still had his pants on. You leaned away from the kiss, causing Sebastian to give you a questioning look. You pushed him back onto his knees and began to unbuckle his belt, eagerly trying to free him from his pants. You could see the outline of him and you couldn't wait another minute. Before you could tug down his pants, however, he grabbed your hands and stopped you. You looked up at him in disbelief.

"Let me," He said, starting to stand up and remove his pants.

"But I want..." You trailed off. He got to pleasure you, it was only fair if you returned the favour.

"This is about you, not me," He said, kissing your forehead. You pouted but reluctantly sat back.

Sebastian tugged his pants and underwear off in one go and your eyes widened in surprise. He was huge, how the hell was he supposed to fit?

Sebastian chuckled and lightly fisted himself, "Do you like what you see?"

You nodded your head enthusiastically and he laughed, "Don't worry, darling. I'm going to take care of you."

He laid you down and slotted himself between your legs. He teased your entrance with himself and looked up at you, "Are you sure?"

You wrapped your arms around his neck and tugged him towards you, "I've never been more sure about anything in my life. Sebastian, please fuck me."

Sebastian let out a groan and slowly inched his way into you. You were always told that your first time was supposed to hurt, but for some reason, it didn't hurt at all. It just felt right. When Sebastian slotted his hips with yours, he let out a low moan.

"You feel so fucking good."

You wrapped your legs around his hips and ground against him, "I'm yours, Seb."

That seemed to trigger something inside of him. He pulled out slightly and slammed back into you, causing you to let out a loud moan. He grabbed your hair and looked deeply into your eyes, "Say it again."

"I-I'm all yours, Sebastian," You whined, begging for him to move.

Sebastian shivered and started to thrust into you faster. He felt amazing, and you couldn't help the moans that spilled out of you.

"Merlin, it feels like you were made for me," Sebastian groaned, gripping your hips tightly.

You already felt close again, but the feeling only amplified when Sebastian grabbed your legs and put them over his shoulder. He was hitting a new spot in you that made you let out a scream.

"O-Oh fuck! Right there, Sebastian!"

He smirked and continued his pace. His thrusts soon became sloppy, "I-I'm close."

You nodded in agreement and he wrapped an arm around your thighs, somehow making himself go impossibly deeper. Sebastian rubbed circles onto your clit quickly.

"Cum for me," He said.

Your legs started to shake and you threw your head back in ecstasy. Pleasure radiated throughout your body, the only thing you could think of was how good Sebastian was making you feel. You gripped his hands tightly and his thrusts became even sloppier, "I'm gonna..."

"Cum in me," You begged.

Sebastian faltered slightly, "W-What did you say?"

"Sebastian, cum in me. I need you. I need all of you."

Sebastian groaned out, "You want me to cum deep inside you? Make you mine and only mine?"

"Yes! Sebastian, please. All yours!"

Sebastian thrust one last time, holding your hips tightly. He let out a low moan and you whimpered at the feeling of him. It felt impossibly good. You finally felt complete.

Sebastian slowly removed himself from you, both of you wincing from the loss of heat. He almost felt himself stiffen again at the sight of himself dripping out of you. He looked up at your fucked out expression and smiled. He did that. No one else but him; especially not Garreth fucking Weasley.

 

-

 

The next day the two of you walked hand-in-hand to Defense Against the Dark Arts Class. Both of you with big smiles across your faces. All of Hogwarts was disappointed to hear that you had finally settled down, with Sebastian Sallow, no less. The boys were devasted for you being out of reach, and the girls were devasted about Sebastian.

When you sat down beside each other, the hickeys Sebastian left the night before shining clear as day on your neck, Garreth clenched his fists in anger. Sebastian met his glare and smirked at the redhead, kissing your forehead possessively. You smiled up at your new boyfriend happily. You never figured out what quite came over you that day, but one thing was for certain. You were glad it happened.