The Trilogy: Smuts & One-Shots

Fucking His Best Friend*: Sebastian Stan

Pairing: Sebastian Stan x Reader
Warning: Smut!
A/N: in case this story gets taken down go follow my tumblr. @nora-malfoypotter
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The music was blasting through every room in the house. Y/n had no clue why she had come to this party. Her and Chris weren't on good terms since she caught him sleeping with her best friends a couple of months ago. The invitation to this party wasn't even from Chris directly, so her purpose for being there, she was completely unsure of. She walked through every room. Watching people take shots and make out in the corners of the room. Chris was 41, what was he doing throwing parties as if he were 20?

She hoped she wouldn't be recognized by anyone. She only came to find out who actually sent her the invitation and why they wanted her here. She looked all through the house and couldn't find anyone who caught her eye other than the many celebrities Chris surrounded himself around. None of which took interest in her. So who the hell could've sent her this fucked up invitation anyways.

She walked through the kitchen, grabbing herself a cup filled with god knows what. She took a drink and immediately felt the burn down her throat. Y/n looked around the room, her heart skipping anytime she saw someone who even resembles Chris in the slightest. She just wanted to leave. Y/n was tempted to give up, but before she did, she made her way to the backyard. Her heart dropped completely when she saw the beer pong table. Chris' favorite party game. She didn't even have to scan the backyard to find him. He was there. Wearing his skin tight blue shirt she loved to see him in so much. His hair tucked back in a backwards cap, and a ball in his hand, ready to make it into the last remaining cup on his opponents side. A tear started forming in her eyes. Y/n was done. She turned away, making her way upstairs into the guest bedroom she had got to decorate when she once lived here with him. Slamming the door behind her, she went and sat down on the bed. Her face in her hands as she cried.

Y/n heard the door crack open. A familiar voice follows behind it.

"Y/n? I saw you run in here."

Y/n looked up, a bit in shock.

"Seb?" She asked quietly. Her voice was shaking.

"May I come in?" He asked, his voice as always.

Y/n nodded her head lightly before scooting over so she could sit by her.

"Are you okay?" Sebastian asked her as he sat down. He threw his arm around her shoulders and pulled her into his chest.

She sniffled, "Yes. I think. It just hurt seeing him so soon," she responded.

"Why are you here, if you don't mind me asking?"

"I don't know. I got a random invite. I wasn't going to come. I swear. I just thought that maybe I would have fun. It was stupid, I know that now." She said, pulling herself back from him.

Sebastian looked at her face. His soft blue eyes staring into hers. For a moment Y/n didn't feel sad. Sebastian was always there for her when she and Chris would fight. The night she caught him in bed with her best friend, Sebastian was the first person she had called. Him and Chris may have been friends first, but Sebastian was always sure to be there for Y/n when she needed him.

"I'm so sorry. You don't have to be up here with me while I cry. I'm just going to go." She said, wiping the tears from her face and heading to the door.

Sebastian stood up once her hand touched the doorknob. He grabbed her wrist, his eyes burning into her. "Don't leave."

Y/n turned to him. He towered over her. He truly looked like a Romanian god standing there in front of her. He stepped closer to her, causing her to walk back into the door.

"Sebastian?"

"Let's get back at him."

Y/n looked at him. Her eyes narrowed. She wasn't angry; just a bit confused.

"What do you mean, Sebastian?"

Seb laughed a little before sliding his hand up her arm, "He slept with your best friend, right?" He asked, knowing the answer. His eyes shined with sin while his lips curled into a devilish smile. "Why not sleep with his?"

Y/n thought about it. It wasn't the worst idea. Sebastian was very charming. She'd seen his body multiple times and she'd be lying if she said she didn't think about being under it.. Or on top of it.

"So you want to fuck me?" She asked, her voice a bit more confident.

"I always have, Y/n."

"So what? Do we just tell him after or something? How is this going to work?" She asked, putting her back completely against the door.

"We don't have to." Sebastian said as he walked closer to her. "Nobody has to know. Just let me make you feel good." His body pressed against hers while his hand trailed up her dress. "You obviously wanted to be noticed by someone in this." He said, lifting the black shiny fabric up.

Y/n felt chills as his fingertips touched her skin. He was right. She did want to be noticed. His touch felt so good against her warm body. Her breathing was becoming uneven as his lips touched her neck.

"Sebastian." She whispered.

"Hm"

"Let's move to the bed."

Sebastian picked Y/n up, sitting her at the end of the bed. He slightly pushed her body down and got on his knees.

"You looked so good tonight. I've been watching you since you walked through the door." He said. His voice was deep.

Y/n breath hitched as Sebastain pulled her dress up. His face leveled with her soaking pussy.

"No underwear?" He said with a small laugh.

He looked up at her, making sure this is what she wanted to do. Y/n nodded her head, giving him permission. She wanted this. She needed it.

Sebastian pressed his tongue against her clit. Lightly swirling it around. Y/n let out a deep breath, throwing her head back a little. Her body immediately started shaking with pleasure. This was something she hadn't felt in a while. Chris had stopped touching her long before she caught him cheating. This was something she was craving.

Seb added more pressure, sending jolts of ecstasy through her body. A loud moan leaving her mouth. Neither of them cared about being quiet. The music was so loud no one would be able to hear them anyways.

"Sebastian." Y/n moaned.

Her body tensed at how much pleasure was flowing through her body. Her back was arched while her head was thrown back. She opened her eyes for a mere second. Instantly turning quiet when she saw him standing there.

Chris.

A bit of fear entered her body.

Chris looked her in her eyes. His dick was hard as he watched her. Y/n's mouth was hung open, eyes fluttering shut as Sebastian got her closer and closer to cumming. All he wanted to do was rip Seb from her and fuck Y/n himself, but he didn't. He just watched them.

"Fuck, Sebastian." Y/n moaned louder, looking Chris right in his eyes as she smiled at him.

Chris knew he deserved this, but he loved it. "Keep going." He mouthed at her. He wanted to palm himself but knew he couldn't. Sebastian might hear him and stop, and he didn't want that. He wanted to watch them.

"I'm so close, baby." She said, but not to Sebastian. "Fuck, I'm going to cum." She moaned loudly. Her legs tightened around Sebastian's head. Every ounce of sadness and worry left her body as she came.

Chris smiled at her. She watched him as he opened the door slowly, his eyes not leaving hers as he quietly stepped out and closed the door.

She smiled at herself as she unwrapped her legs from Sebastian.

Sebastian looked at her, his face soaked with her release. His eyes are dark blue. He looked her body up and down.

"Sebastian." Y/n said, catching his attention.

"Yes?"

"Fuck me."

Possibly