Somebody Else
(Mob AU) Cherry!Seb x Reader
Run-through: You decide that it’s high time to tell your boyfriend about the other man in your life, because you couldn’t lie nor keep it a secret anymore. And needless to say, he doesn’t take it very well.
Themes: angst, smut, jealous!seb, fluff
a/n: for those confused, ‘cherry!seb’ is mob!seb, we just gave him a name because well, click here
You were so anxious that it was hard to breathe for a little while.
The moment you heard his car entering the gates, you shot up from the couch and rushed down the stairs. You had been thinking about this for a while now, but tonight was the right time. You couldn’t lie anymore. And it hurt you each time you had to refrain yourself from bringing it up on the phone.
Just as you reached the foyer, you watched Seb walk in - the notorious mob boss who was mean, and ruthless and cruel to anyone else but you. To you, he was everything you could ask for.
He smiled the moment his eyes met yours. “Hi babygirl.” He opened his arms and engulfed you in a warm, tight bear hug. He had been away for work for days, and right now all he wanted was to be home with you.
“Hi baby. Welcome home.” You nuzzled his neck and inhaled his absolutely delicious cologne. You pulled away to look up at him but he was busy scanning your outfit.
He frowned for a brief moment, “Are we going somewhere?” He couldn’t help but ask because although you always looked beautiful, the little sundress you were wearing was absolutely stunning.
You linked your arm with his as you two walked further into your home. “Nope.” You answered, and bit down on your lip as you looked up at him.
He stopped and grabbed you by the waist to pull you closer to give you a sweet kiss on the lips. He pulled away gently, “So you got all dressed up just for me?” You nodded at his question and he chuckled, leaning in to kiss the side of your mouth again. “You know, as much as I appreciate you looking extra pretty for me, all I wanna do it get you out of this dress and-,”
“No,” You whined playfully, pulling away. “Not happening. Go freshen up, I made dinner.” You watched how his brows furrowed a little at you.
“Okay…” His reply sounded more like a question. “Did I forget something, baby? Our anniversary is in December, your birthday is next month and we-,”
You cut him off again, he was stressed out you could tell. “You didn’t forget anything. You’ve been working a lot lately, you’ve been away from home a lot. I just wanted to do something nice for when you get back.” You whispered, grabbing him by his face and pulling him in for a kiss.
He moaned into the kiss and tightened his arms around you, feeling your warm body beneath the dress. “You didn’t have to do anything. You make me feel so much better just by being here with me.” He whispered, his voice deeper, as he kissed his way down your neck. His touch was very persuasive and you almost gave in but then you remembered…
“Okay,” You giggled as you pulled away. “Don’t ruin my plans, now go shower. I’ll be waiting,” You pulled away from his embrace and he groaned as you walked away from him. You turned to face him one last time before you walked into the open kitchen, “And you better be back before I finish my first glass of wine.” You winked at him.
He bolted. Ran upstairs as fast as he could, smiling to himself and wondering how he got so lucky.
Seb showed up sometime later, showered and relaxed; smelling even better. You watched him enter the kitchen, his body moving slowly but confidently - dressed in nothing but just dark grey sweatpants. You bit your lip again as he walked over to you and tried to get all cozy again but you pushed him away playfully.
Midway through dinner, he looked up at you and took your hand in his. “This is torture.” He murmured, taking a sip of wine while rubbing slow circles on the back of your hand.
You smirked. “What, I made your favorite dinner, opened your favorite wine. How is that torture?” You knew you had to get him in the right mood before telling him all that you had to say.
He studied your face for a while, narrowing his eyes at you. “Is there something you want? Babygirl, you know all you have to do is ask. Whatever it is, I’ll get you.” He spoke, then lifted your hand up to his lips, pressing a soft kiss to your knuckles.
You tilted your head to the side. “What do you mean? I make us dinner all the time, why does this seem suspicious to you?”
He playfully nipped at your finger. “Because I know you too well. And I know you’re up to something.”
You pulled your hand away to pick up your fork again. “Well I’m not, now eat up.”
Dinner was just as perfect as you wanted it to. And another glass of wine later, you and Seb found yourselves on the couch in the living room, watching a movie - barely, because Seb was having trouble keeping his hands to himself.
Each time he slid his hand under your dress, you pushed his hand away. You purposely dodged each one of his kisses, and you knew it wouldn’t be long before he snaps. But you needed to get him desperate enough to where you’d have his whole attention.
“Babygirl,” he whined, pulling you on his lap again, “Give me a kiss, come on.” He grabbed your face and pressed his lips to yours. You kissed him back, wondering if you should just tell him now.
You pulled away from his kiss and straddled him, he looked up at you with the same curious look he’s had all evening. “Okay,” you took a deep breath. “There’s something I need to tell you.”
Seb raised an eyebrow at you. “See? I knew it. I knew you were up to something.” He almost purred as he ran his hands up and down your thighs.
You inched closer to him, and cupped his face in your hands so you had his undivided attention. “I love you, you know that, right? I will always love you, no matter what.”
He blinked at you, nodding.
You kept going. “And whatever happened, it was… it was so unexpected. I wouldn’t call it a mistake but I- I didn’t think it through at the moment. But that doesn’t mean I love you any less.”
He sat up a little straighter, grabbing your hips so you don’t fall off his lap. He blinked once again. “Baby, what are you talking about?” His heart raced just a little. He had no idea where this was going.
You sighed, and looked down at his bare chest. You brought your hand down and traced along his freckles and indents of his muscles. “Um, recently you’ve been gone a lot. And I’m fine with it really, I mean I know you work so much and how important work is for you. But I… I was so lonely and vulnerable at the time and he just-,”
Seb cut you off with a look of horror on his face. “He? Who’s ‘he’?” He looked like he was confused, angry and surprised all at once.
“Baby, just listen, okay? It didn’t mean anything, it’s not… I wasn’t supposed to get attached but then you know, I-,”
Seb cut you off by sitting up straighter and he grabbed both your wrists and held them away from his face. “Attached? To who? You… you found somebody else?”
You sighed, “Baby… I didn’t mean for it to happen.”
His eyes widened. “What the hell are you talking about? Did you- do you… did you cheat on me?” His voice cracked a little by the end.
You lowered your head in shame. “I… I met him through a friend, they know each other and he was staying with her until he found a new place. And he came along with her when I invited them for dinner the other night. You were away at that time, and I… it wasn’t supposed to but it just happened.”
Seb repeated your words in his mind. It just happened… it just happened?
He grabbed your thigh and pushed you to the side, gently. His movements were so slow as he got up from the couch with a frown on his face. “What… what do you mean ‘it just happened’?” He walked a few steps away, stopping by the fireplace and then turned to look at you. You sat criss-cross on the couch, lowering your face still. “Look at me!” You could hear the disbelief in his voice.
You lifted your head up to look at him. His body flushed with the anger he was having trouble containing. He ran his fingers through his short hair, his muscles flexing as he did.
“I’m sorry.” You murmured.
He looked at you like the apology only drove another dagger through his heart. “You’re sorry?” He sounded defeated. “You cheat on me, and that’s all you have to say? That you’re sorry?”
“Babe, I-,”
He snapped. “Don’t call me that!” He took a deep breath, running his fingers through his hair again as he paced in front of the fireplace. “Why.. how did- when did you…” he stopped rambling. Too many thoughts ran through his mind all at once. He was having trouble breathing, and his head was pounding - he felt like he was going to be sick.
“When they came over for dinner that night, uh, we all had a little too much to drink and I couldn’t let them drive back home so I offered that they spend the night and leave in the morning. And that’s when I… I got to know him a little more and…” You looked at Seb and found him staring at you, his heart breaking, “and that’s when-,”
“Enough.” He looked away, hands on his waist. “So you just- why are you even telling me this right now? Why tell me at all? Because you couldn’t live with yourself, or is it… is it because you’re in love with him or something?”
Your silence gave him the answer he needed.
“What the fuck? You’re just gonna throw away all we had for this dude? Who the hell is he anyways? You know I’m gonna find out who he is and I’m gonna make sure it hurts when I-,”
You got up from the couch and walked over to him, placing your hands on either side of his waist. His skin was warmer than usual. “Seb please, I care about him.”
Seb looked at you like you spoke some other language. “What bullshit is this?” His heart was beating like crazy, an unpleasant chill dancing down his spine as he felt the tips of his fingers getting numb. “You… you what? Are you-,” He stopped talking abruptly, panic showing all over his face briefly before it was replaced by burning anger. He pushed your hands away from his body. “Is he… is he here right now?” He gestured upstairs. “Are you keeping him here? Has he been here this whole time?”
“Baby, just listen okay? He needed a place to-,”
Seb cut you off by rushing past you and rushing to the drawer where he kept a spare gun, always. You ran after him.
“Seb, wait.” You caught up with him at the stairs. “Just wait, okay, I-,”
He cut you off by grabbing your wrist and tugging you along as he rushed up the stairs. “So not only do you cheat on me, but you let him stay in our own home?” He sounded like he was trying so hard not to unleash the beast inside at you. “What did you think, you were gonna convince me and all three of us would live happily ever after?”
You remained quiet, you hadn’t expected this to turn so violent so soon.
When you reached the landing upstairs, Seb pushed you against the wall, almost growling in anger as he caged you in. “I’ll deal with you later, babygirl. But first I’m gonna deal with your little boy toy and I’m gonna make you watch as I hurt him.” He meant it, every single word. “Where is he?” he asked, his voice dropping so low that you visibly shivered.
You opened your mouth, then closed it, then opened it again. “Don’t hurt him.” You murmured and his hands were shaking with all the emotions that he was having trouble dealing with all at once.
He chuckled, darkly. You looked into his eyes and they had darkened too. “Don’t tell me what to do, babygirl. Do you really think you can protect him?” He leaned in closer, his lips just inches away from yours, “Where is he?” He asked slowly.
There was no way for you to get out of this one. “The… guest room.”
Seb didn’t move for a few seconds, his brain still processing all of what just happened in the span of a few minutes. His heart was breaking more and more with each passing moment. “I’m gonna burn this whole house down,” he grabbed your wrist again, tugging you further down the hallway and towards the guest room, “With him in it.” He growled the last bit.
He gave you a piercing look as you reached the guest room. He let go of your hand and cocked his gun. He didn’t even think twice as he burst through the door, “You piece of-,”
You heard how his voice died down into a groan. You pushed open the door even wider and took a step further in, you crossed your arms over your chest as you leaned against the doorframe. You giggled at the sight in front of you.
Seb clutched his chest as he fell onto his knees on the floor, exhaling loudly and lowering his head to the floor. And in front of him was the little ball of black and white fur - your new pup, a baby Border Collie.
Your friend was fostering him, and she brought the pup along when she came over for dinner the other night and told you about how he needed a forever home. You hadn’t thought about having a dog just yet, but when you saw this little baby that night, you knew you had to keep him. So you did, and you hadn’t told Seb about it right away.
And well, he just found out.
“Isn’t he handsome?” You asked, and upon hearing your voice, the little one yelped and ran over to you on its little legs. You giggled as you picked him up and walked further into the room, which was filled with everything a dog could need. You went over and knelt right in front of Seb, holding up the pup, making them both face each other.
“Don’t burn the house down. I’m sorry I cheated on you with this handsome boy.” You teased.
Seb finally lifted his head to look at you both. He hissed, “I think I’m having a heart attack. Or my blood pressure is really really high.” He locked his gun and tossed it to the side. “Woman, you’re killing me.”
You rolled your eyes at Seb. “Oh stop your theatrics.” You looked down at your new dog, stroking his soft fur. “Did you really think I would cheat on you?” When you looked back up at your boyfriend, he was looking down at the dog.
“You scared me for a moment. I didn’t know what to think. I didn’t think, I just...” He groaned. “You really know how to mess with me, don’t you?”
You giggled, and he threw you a dirty look before picking up the pup from your arms to inspect it better. “So this little guy kept you company while I was gone?” The little one yelped and started licking Seb’s chin eagerly. “I think I’ll forgive him, good thing he’s cute.”
You watched them both, smiling like crazy. “I named him Kenny.”
-
You then spent the next hour explaining how you got the dog and hung out with your new pet, until Kenny fell asleep. And while you stepped out of the room, Seb grabbed you and pushed you against the wall again, just outside the guest room.
“I hope you know that had there been a guy in there, I would shoot him first and ask questions later.” He whispered before pressing his lips to yours.
You smiled into the kiss, giggling when he bit down on your lip. “You crazy man,” You pulled away to look into his eyes. “I love you, I wouldn’t do that to you, to us.”
“Hmm,” he leaned in to kiss your neck. “Don’t you dare leave me.” He mumbled against your skin. “I mean it.”
“Else you’re gonna burn this house down?” You teased him for his dramatic threat earlier.
He groaned, pinching your butt and making you squeal. “Or I’m gonna burn this whole city to the ground,” he corrected you, “And everyone in it.” He added, making you chuckle as you pulled him in for another kiss.
Seb had gotten rid of your dress before you even made it to your bedroom.
You laughed as you made him chase you around the room, and he groaned each time he missed you. “Come here, you little-,” He finally caught you and pinned you down on the bed, straddling you and gripping your wrists in his hands as he leaned down to kiss you. “You better make up for almost giving me a stroke, babygirl.” He murmured.
You gasped as he bit down on your neck, kissing and licking along your throat. “And you better make up for being away so much.” You sassed.
He chuckled. “Well then, we both have a lot to make up for it seems.”
Seb placed his mouth on top of yours to swallow your whimpers and moans as he pushed his cock into you. He groaned as he pushed himself fully into you. He lifted his head and watched you grimace in pleasure and pain as his cock stretched you out. He watched you in awe as your lips parted and you moaned his name once he filled you up nicely.
You whined as he slowly slipped out of you completely, before slamming back into you with a slightly bigger force.
He groaned at the feeling of your walls wrapped around him, squeezing and clenching around him. You heard him swear and felt him bite down on your lip as he sped up into you. He tugged on your lips and he started moving his hips; rocking into you slowly, then gradually increasing his speed. Your back arched off the surface of the bed again and your chest pressed to his.
He moaned into your ear. “You’re mine.”
“Baby…” You were a moaning mess under him in no time. There was something about the way he kissed you, deeply and passionately; as though he was scared you might just get away from him.
He worshipped your body. He mumbled how good you felt in your ear, groaning as you bucked your hips to meet each one of his thrusts as well. He kissed you roughly as he pounded into you; fingers wrapped around your throat. He fucked you raw and relentlessly, watching how your face morphed into frowns of pleasure.
He pressed his forehead on yours; looking down to where your bodies connected so intimately. Then he pulled away to look into your eyes with that animalistic, primal and fiery look in his eyes. His lips parted as he panted while he fucked you like he owned you.
“You missed me, didn’t you, babygirl?”
You nodded, whining in pleasure. He smirked. His hand left your neck and slid in between your connected bodies and furiously rubbed your clit, earning a loud moan out of you.
“Say it, baby. Tell me how much you missed my cock buried deep inside you…”
You couldn’t talk as the pressure in between your legs became too much to handle, and you craved for release.
He cooed, “Missed me so much it had you acting up. Scheming for ways to torture me for being away from you for so long…” a dark chuckle followed his words, “For not being here to fuck this greedy little cunt, huh?”
He noticed that you were too much in a haze to respond. So he just slipped his tongue back into your mouth and took your bottom lip between his teeth again.
“Come on, cum for me babygirl…,” he swore as he felt you clench around him perfectly. You came hard around him, moaning and whimpering under him as he finished right after you; kissing your swollen lips deeply as he came.
He pushed his face into the crook of your neck as he caught his breath. And you cradled his head; panting as well. Your fingers gently massaged his scalp as he calmed his racing heart. “I’ve missed you so much.” You mumbled.
A few moments later, he shifted all his weight right on top of you making you laugh as you tried to scoot out from under him.
He groaned and pulled you closer. “Come here.” He pressed you against his body and wrapped his arms around. “I love you. So much. Don’t you ever leave me.”
You buried your face into his chest, inhaling his scent. “Never happening. You’re my one and only.”













