Sebastian Sallow X F!mc - Tumblr Posts

ᯓᡣ𐭩 𝐌𝐲 𝐨𝐧𝐥𝐲 𝐠𝐢𝐫𝐥 ― 𝐒𝐞𝐛𝐚𝐬𝐭𝐢𝐚𝐧 𝐒𝐚𝐥𝐥𝐨𝐰

𝙋𝙖𝙞𝙧𝙞𝙣𝙜: Sebastian Sallow x F!Slytherin!reader

𝙂𝙚𝙣𝙧𝙚: fluff, just a little bit of angst sprinkled in here

𝙒𝙤𝙧𝙙𝙘𝙤𝙪𝙣𝙩: 3.4K — 23 𝙢𝙞𝙣 𝙧𝙚𝙖𝙙

𝙏𝙒/𝘾𝙒: alcohol/drug consumption, suggestive dialogue, maybe some curse words? idk anymore

Characters are aged up, 18+.

𝘼/𝙉: Use of Y/N, there are some descriptions about the outfit of the reader but if you want to imagine a different outfit, please do! I tried to write a reader who is more self-assured in her relationship because I like to read that once in a while. Also, English is not my first language, so please ignore all the grammatical errors in this one. I’m still editing and learning how to write dialogue so please bear with me!

⤷ 𝘝𝘪𝘰𝘭𝘦𝘵 𝘵𝘩𝘪𝘯𝘬𝘴 𝘴𝘩𝘦 𝘤𝘢𝘯 𝘨𝘦𝘵 𝘚𝘦𝘣𝘢𝘴𝘵𝘪𝘢𝘯 𝘪𝘯 𝘩𝘦𝘳 𝘣𝘦𝘥 𝘢𝘵 𝘵𝘩𝘦 𝘦𝘯𝘥 𝘰𝘧 𝘢 𝘚𝘭𝘺𝘵𝘩𝘦𝘳𝘪𝘯 𝘱𝘢𝘳𝘵𝘺, 𝘣𝘶𝘵 𝘭𝘪𝘵𝘵𝘭𝘦 𝘥𝘰𝘦𝘴 𝘴𝘩𝘦 𝘬𝘯𝘰𝘸 𝘵𝘩𝘢𝘵 𝘩𝘦 𝘪𝘴 𝘺𝘰𝘶𝘳 𝘣𝘰𝘺𝘧𝘳𝘪𝘦𝘯𝘥 𝘸𝘩𝘰𝘴𝘦 𝘩𝘦𝘢𝘳𝘵 𝘪𝘴 𝘴𝘦𝘵 𝘰𝘯 𝘺𝘰𝘶 𝘢𝘯𝘥 𝘰𝘯𝘭𝘺 𝘺𝘰𝘶.

⋮ 𝗠𝗮𝘀𝘁𝗲𝗿𝗹𝗶𝘀𝘁

It was finally Friday night and as per usual, one of the houses was throwing a party. As it was agreed to rotate every week, it was now time for Slytherin to host again.

You got ready with Natty and Imelda in the dorm room you shared with Imelda. As you were still deciding on an outfit and trying different pieces of clothing on, Poppy entered your room, out of breath. “Sorry, I know I’m late and I see you are almost ready. But I have a good enough reason to be late.” Imelda rolled her eyes, before focusing back on her make-up. Poppy gave her a light (friendly) shove as she walked past her towards your bed. “Oh stop that, will you.”

She set down her make-up bag and clothing before turning towards you. “Okay first of all, if you’re going with that green top you should wear that black skirt you got last month.” You looked at her through the mirror and nodded to her. “I guess you’re right, let me change into a skirt.” You turned towards your closet. Poppy nods and sits down. “Okay, the reason why I’m late is because I overheard Violet on my way here.”

This causes all three heads to turn towards Poppy. Imelda had eyeliner on only one eye as she stared at Poppy to continue. “If it caused you to be 20 minutes late, this should be something interesting,” Natty spoke up from the floor next to your bed, her eyes fixed on the mirror while doing her hair.

“It is,” Poppy nodded, “Okay, so you know how obsessed Violet is with Sebastian?” You scoff and give her a pointed look. “Even Ominis can see that and that kid is blind.” You turn your attention back to your closet and continue to look for the black skirt you want to try on with the top. Poppy rolls her eyes at your comment.

“Anyways, she said she is so sure she can get him into her bed by the end of the night. Seems like she really wants to make her move on him tonight.” This causes the girls to stop their movements and stare at Poppy. Imelda closes the cap on her eyeliner pen and speaks up, “So… she really doesn’t know Sebastian is in a committed relationship and head over heels for our lovely Y/N here?”

“Well, she did mention it is always difficult to talk to him because he is always with Y/N. Even went as far as to say that she doesn’t understand why he puts up with you” Poppy replied, the last part directed towards you. “That little-” you huff out when you turn around, skirt in hand. Changing into the skirt, and sighing when you think over the words Poppy just said. “I mean, we didn’t come out as a couple you know, so I’m not surprised she doesn’t actually know we’re together. And it is not like we act differently around each other now we are together. Besides, everyone already assumed we were.”

You smooth out the skirt and hum in approval of your outfit. “Yeah, everyone but Violet”. Natty says. “She even admits it is hard to talk to him because he’s always with you. Besides the point that he is your boyfriend, doesn’t she know he is not interested in her?” she continues, “Even before you came to Hogwarts in our fifth year, he always tried to avoid her at all costs. She is so overbearing.”

You sigh and walk over to your bed after approving your outfit. “Knowing Violet she probably wants to do it publicly so I would know she claimed him.” You sit down next to Poppy on your bed and start putting on your make-up. “Everything we do is a competition in her head, so this would be the same.” Poppy shifts on the bed and turns to you. “We all know Sebastian only has eyes for you, you don’t need to worry about that.” She smiles softly at you as she opens her make-up bag to quickly get ready.

“I know, I’m just a little worried about how far Violet will go.” Natty looks up to you from her seat on the floor. “You know we will hex her if she does something out of line”, you snort at her comment. “Imelda is just dying to do it for you, you know.” Natty says while Imelda smirks proudly.

“Okay enough about that ugly shade of purple,” you turn your attention to Poppy. “Are you finally making your move on Garreth tonight?” Poppy gasped lightly and shook her head. “I don’t know what you’re talking about.” only the blush spreading on her cheeks is telling you otherwise. “He asked if you were coming tonight” You looked into your hand mirror and applied your eyeshadow. “He did?” Poppy squeaked out. Clearing her throat she asked again, “He did?” Imelda locks eyes with you and smirks as you try to contain your laughter.

“Sooo…” She drags out, “I guess Y/N isn’t the only one going back to the dorms with someone tonight”. Poppy glared at her and scoffed. “Just let us know how it was in the morning, I am kinda curious about his dick,” Imelda commented nonchalantly. This causes you and Natty to bark out a laugh while Poppy stutters over her words. “Imelda, you’re gay.” Imelda barks out a laugh, before replying, “So? I might munch muff but I still acknowledge Garreth is easy on the eyes.” Poppy just huffs and focuses on her make-up. She mumbles something under her breath but Imelda drowns it out when she laughs at Poppy’s reaction again.

As you walk down to your common room, you can already feel the bass vibrating the walls. Muffled voices and music are heard down the hall and you are in desperate need of a shot, or two. You are sure Sebastian wouldn’t do anything to hurt you or jeopardize your relationship, but you still feel a bit uneasy because you know Violet will do anything to get what she wants.

As Imelda opens de door to the common room, you are met with a full house and someone sneakily pushing past you into the common room. You couldn’t see exactly who it was, as they already disappeared in the crowd.

The party is in full swing and fire whisky is flowing richly. You spot Garreth already, with some other Hufflepuff girl next to the fireplace. It seems like he already started mixing the fire whiskey and Mallowsweet. You can see Poppy’s facial expression fall when she follows your sight. It is no secret she is attracted to the red-headed Gryffindor. Poppy rolls her eyes and drags you with her to look for a bottle of fire whiskey. “I need a shot!” She yells over the music.

The other two girls follow and eventually get caught up by others and their conversations. You have yet to spot your boyfriend. While searching the room for his presence, Poppy helps you and herself to a shot of fire whiskey. After tasting the burning alcohol at the back of your throat, Poppy seems to have poured herself already a second shot. Filling up your glass, you both took another shot. Poppy seems to be in her head as she pours another one. “Okay hold on Pops, I think we should slow down on the shots after this one”. You pry the bottle out of her hands and pour yourself one last shot. “Last one,” Poppy said and downed it. “For now.” she mumbles after taking the shot.

The night went on and there is still no sign of your boyfriend. Suddenly you spot Ominis standing against the wall and walk up to him. “Have you seen Sebastian?”, you ask after you greet your friend. He shakes his head and takes a sip of his drink. “He went to the bathroom a while ago, seems like he hasn’t found his way back yet.” You sigh and lean against the wall next to Ominis. “Don’t worry, he’ll be back soon.”

“He better be,” you grumble next to your friend. “It’s just, Poppy overheard Violet and I just don’t want to see what she has planned tonight to get with Sebastian.” Ominis laughs at your comment and shakes his head. “That girl is as daft as a brush”. You chuckle at his remark and nod along, even though he can’t see it. “I know, let me know if you find him will you?” Ominis nods and lets you go on your way.

You walk back towards Poppy and see her finally talking to Garreth. It seems like they only have eyes for each other. The other Hufflepuff girl is long forgotten, as is her annoyance with Garreth from before. You watch how Poppy giggles at something Garreth says and slaps his chest. His hand comes up to hold her hand there and leans in slightly to hear her better. Her cheeks turn red when she notices Garreth leaning into her, her eyes widening a bit but her smile never falters.

You decide to search for your other friends as you walk by Violet. Her presence alone is enough to annoy you, but hearing her shrill voice greeting you makes it even more unbearable. You turn towards her and give her a fake smile as you try not to roll your eyes.

“How lovely to see you this evening, but I have noticed you’re not glued to Sebastian’s side. Did he get bored of you already?” She smirks and cocks her head slightly to the side. You scoff slightly and cross your arms. “Is there another reason you keep talking to me about Sebastian or are you just that obsessed?”. You see her eyes narrow slightly, seems like you’ve hit a nerve. “You know, I just don’t know why he keeps being friends with you. I mean, you always follow him around like a lost puppy. Is it still not obvious that he doesn’t want to be more than friends?” Her expression turns into a sympathetic one, albeit a fake one.

“And what makes you think Sebastian and I aren’t together already?” You feign innocence as you ask her the question. Curious as to what she will answer you take a step closer to the dark-haired girl. “I mean, you said it yourself earlier. We are always together, glued to each other’s sides. Who knows what goes down behind closed doors.” This causes Violet to scoff loudly. “You really think he would choose you?” she rather states instead of asking. You shrug innocently, awaiting her next move. Of course, you know for a fact that he would 100% choose you.

“I know for sure he needs someone who can challenge him, and of course, please him like he should be pleased,” Violet smirked at you. “Don’t you think?”, she taunted at you while tilting her head. Just the thought of her hands all over Sebastian made your stomach hurl, but hearing her imply that she thinks she knows how to please your boyfriend makes your blood boil. You scoff at her comment and roll your eyes. “Let me guess, you think you are the one who can do exactly that hm?”

Her eyes narrow slightly while her smirk falters at the tone of your voice. It is sharp enough to take hers down a nudge. Violet tries to hide her annoyance on her face, “We both know who he would choose when it comes down to both of us. Some are just,” Violet chooses her next words wisely, “better than others.” Shrugging her shoulders, she feigns innocence. The smirk reappears on her face.

This remark causes other students to stop their conversation and turn their attention to the altercation between the two Slytherins. Because of the small commotion that ensues, Imelda and Poppy appear next to you. Your eyebrows shot up at her comment. Before you could throw an insult at her, Imelda beats you to it. “At least Y/N doesn’t need to desperately throw herself at someone, just to get a smidge of attention.” That should knock her down a peg. Poppy just nods along with Imelda’s comment. Imelda is not one to hold her tongue, sharp as ever. It is not always celebrated but it can sure come in handy in times like these.

Her eyes narrowed again before spotting someone, be it your boyfriend, walking towards the commotion. Her sour expression disappears and a sickly sweet smile paints her lips. “ Well, well, well, speak of the devil,” her voice turning into a syrupy sweet one, replacing the ice-cold one she uses to speak with you. “Hey, handsome.” When Sebastian is close enough, her manicured hand shoots out to place it on his bicep to greet him. Slightly squeezing his bicep as she steps closer to him all while batting her eyes seductively. “This girl has no shame.” Imelda murmurs to you and Poppy.

His eyes follow her hand and frowns a little. “What is going on here? Ominis told me you girls are causing a fuss?” His head turns to you, and smirks. “What is it about?” You roll your eyes at the sound of his voice and his questions. He knows damn well that if you and Violet having a squabble, it most likely is about him. He knows how obsessed Violet is with him.

Every time there is a quidditch game, Violet tries to sit in the front row to cheer him on, next to you of course. She tries to catch his attention by cheering loudly for him, a little too loud. Always trying to be the first to greet him after the game and sitting close to him during breakfast, lunch and dinner. Whenever you two are walking together or sitting together, she tries to come between you two. She even goes as far as to persuade the professors to switch partners if she is not partnered with Sebastian. Luck is almost always on your side as most of the professors brush her off and tell her to work with the student she was originally paired with. This girl was as desperate as one could be.

Sebastian is not going to lie, it does stroke his ego. Of course, it does when he sees how you react to all the things Violet is trying to do to your boyfriend. Your little huffs of annoyance, or the way you roll your eyes when you hear her shrill voice say your boyfriend's name. He loves it when you try to keep your calm when Violet wants his attention.

Although he likes to receive the attention, he won’t act on it. His heart is set on you and you know that. Nobody can compare to you and he makes sure you know that, in every way possible. Besides, he loves how riled up you are when Violet tries to make a move on him. He loves to see how possessive you can get and claim what is yours. The sex that ensues after makes him go crazy.

“Violet thinks that if you have to choose between us two, you would definitely go for her,” You shake your head a little, before continuing. “She is sure she knows how you should be pleased.” She snaps her head from Sebastian to you. Sebastian tries to hold back his laughter after seeing how Violet stares you down. Still standing a little too close to him, he takes a step back. “Oh, do you now?” You raise your eyebrow to challenge her as if to say ‘Go on, tell him’.

There is a slight pause before she answers him, “I can show you if you want.” as Sebastian takes a step back, she tries to take one step closer to him again. Her manicured nails trailed up to his bicep again and a sultry smile on her lips. “You should see and feel what I can do with my tongue.”

Imelda and Poppy greeted this remark with a loud laugh. Soon, Sebastian joined them. You, however, hate the way she speaks to him. She is trying so damn hard. Sebastian steps away from her grip and shakes his head. “I’m sure you can make someone else happy with that, but I don’t think my girlfriend would like it when you do that.” He turns to you and takes you in his embrace. Wrapping one arm around your shoulder and giving a quick kiss on your temple. “Hi, love”.

“Besides, this one right here is the only one I would ever want. Nobody compares.” You smile softly up to Sebastian. Even though you’ve been together for quite some time now, he still gives you those butterflies. How could he not when he just said in front of everyone, in front of Violet, that you are the one for him? That nobody compares to you in his eyes?

Violet’s shocked expression makes you stifle a laugh, and then it turns sour. “What?” she asks, “You two? For how long?” She almost stomps her feet, like a small child whose toys have been taken away. This time, Garreth speaks up from behind Poppy. “Everyone with eyes and Ominis could see it, Violet. You’re just daft.” His comment, albeit a snide one, is met with chuckles from those who’ve gathered to see what the commotion is about.

At this point, her face grows red from embarrassment and before she stomps off she looks at you. It looks like she wants to say something, but decides against it. She pushes her way through the small crowd and disappears to the girl's dormitory. Her friends flocked behind her.

“Well, that was something.” Poppy speaks up next to you and turns to Garreth, “The last comment might have been a little much”. Garreth just smirked down at her and shrugged. Before he could reply, Sebastian said, “No she did deserve it. She was a little too obsessed. Told her multiple times I wasn’t interested, even before I got together with this babe.” He wiggles his eyebrows as you roll your eyes. “Hm, turning to flattery now, are we?” He gave you a soft smile and leaned in for a quick kiss. Soon, everyone around you goes back to their conversations, games and dancing.

“Where have you been the whole time? I was looking for you.” You turn in his arms to face him completely. He sighs, “I know, I’m sorry. Ominis told me you were looking for me. Caught a fourth-year sneaking into the party when I came back from the bathroom. Had to get the little git back to his dorm.” You giggle with a shake of your head. “Ruining the fun for the younger ones now too?” Sebastian rolls his eyes.

“You know my heart is only set on you right?” Sebastian says to you as he pulls you closer by your waist. Your chests flush against each other as he looks down in your eyes. Your hands slide up his arms and to the back of his neck. Playing with the hair on the base of his neck, he leans into your touch. “I know, and I trust you completely. It’s just girls like Violet that I don’t trust.”

Sebastian nods slightly and drops his forehead against yours. “Well, I understand that. I mean, the guys are no different.” He gives you a soft smile before his eyes flicker down to your lips. “But, you know, if you want me to show you how much I love you, I’ll be happy to do so.” His eyes glimmer with love and lust and his soft smile turns into a smirk. His hands wander from your waist down to your ass and he squeezes slightly.

This makes you gasp and giggle into his chest. You tilt your head and capture Sebastian’s lips for a quick, soft kiss. You feel him smile into the kiss and when you try to pull away, he deepens the kiss. “Room of requirement?” He asks breathlessly when you finally pull away from each other. You nod eagerly and take his hand in yours to sneak out of the party.

Sebastian definitely showed you how much he loves you and your body until the early morning. And your altercation with Violet is long forgotten as Sebastian keeps reminding you; you are the only one for him.

Please let me know what you think of this one! All the likes, reblogs and comments are appreciated! <3

Ⓒ︎ 𝗶𝘁𝘀𝗮𝘀𝗶𝗹𝗲𝗻𝘁𝗿𝗲𝗮𝗱𝗲𝗿. 𝘈𝘭𝘭 𝘳𝘪𝘨𝘩𝘵𝘴 𝘳𝘦𝘴𝘦𝘳𝘷𝘦𝘥. 𝗗𝗼 𝗻𝗼𝘁 𝘳𝘦𝘱𝘰𝘴𝘵 𝘰𝘳 𝘮𝘰𝘥𝘪𝘧𝘺 𝘮𝘺 𝘸𝘰𝘳𝘬 𝘸𝘪𝘵𝘩𝘰𝘶𝘵 𝘤𝘰𝘯𝘴𝘦𝘯𝘵.