The ABCs of Sex

E Is For "Everyone Will Know You're Mine."

👁️Fandom:  Supernatural
❤️Ship: Reader/Castiel, You/Castiel

💫Description: Cas wants to learn more about human traditions, so you take him to your parents house on Halloween. He gets distracted by your costume, and you quickly learn that Castiel is very possessive.

⚠️Warnings:
🤷‍♂️Content: Halloween costume, possessive marking, hickeys,
📝Words: 1000+
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"You ready, Cas?" You asked, adjusting your black fishnets and checking your makeup one last time. You heard Castiel clear his throat and reply that, yes, he was ready to see your costume.

You dressed up the same every year, never finding the heart to change to a different costume. This one just made you feel so confident with yourself for once...

It was a slutty demon costume. You asked Cas if that was okay, and he told you that he thought the human perception of angels and demons were pretty hilarious, so you went ahead with your usual plan.

Old shoes, splattered with fake blood, black fishnet stockings, a headband with devil horns... Every year you changed something slightly, but this year you kept it the same as last, only adding a touch more makeup. Last year you had added a simple red and black trident. The dress itself was stunning, even while it made you itchy. Glittery red fabric, with the sleeves 'torn' off at the shoulders. It also came with red devil wings that matched with the tail protruding from the back of the dress.

You thought the outfit was sexy. Not 'sexy-nurse-halloween-costume' type of sexy, just sexy enough to be a tease, but not sexy enough for that to be the reason you're wearing it.

You told Cas to close his eyes, and you gripped your trident tightly when he said his eyes were closed.

"No peeking," You said, opening the bathroom door and walking out. He was still sitting on your bed where you left him, and you smiled again at the sight of his costume.

He wanted to dress up as a zombie, and he even insisted on doing his own makeup, the fake rotting flesh drooping off his face. He was good at following instructions, so his makeup looked really good.

"Okay, Cas."

He opened his eyes, looking you up and down with the widest smile you had ever seen. His eyes lingered on the fishnets, and he just stared at them, his eyes occasionally flickering up to meet yours and to study your face.

You spun around slowly, standing on your tip toes and swinging your hips slightly. When you finished your 360, you found that Cas was standing up now, his face seeming dark with an emotion that you couldn't quite place from behind his mask of makeup.

"Do that again," He said, twirling his finger to show what he meant. "Slower this time."

This time, you felt much smaller as you spun slowly, your hand moving up to the top of the trident. When you were facing away from him entirely, he slammed you against the wall, pinning you there with the tip of your trident pressing against your throat.

He growled in your ear, and you got scared. This is not the Castiel you fell in love with. This is not the Castiel you had killed for.

"Castiel?"
He didn't answer you, only breathed on your neck.
"Cas? W-What's happening."

Trying to squirm against him, your ass rubbed against his groin... And it all made sense. He sighed in your ear at the contact, which made you smile. You relaxed and rubbed yourself against him more, loving the way his hands tightened around you.

In an instant, he flapped his wings and you were layed down on your bed, his hands shoving down the tiny shorts you had on to reveal your black lace panties. This was his favorite pair.

You had gotten used to him teleporting you places, so that part was okay, but before you could react to the sudden coolness of the air hitting your inner thighs, his mouth was pressed to your core, still on top of your panties.

His teeth scraped over your clit and his tongue teased the edge of your underwear, so close to your wetness. He pulled away when you finally moaned. Climbing on top of you, he pinned down your wrists and bit your neck softly. You moaned again.

"This costume. It's ridiculous," He stated, kissing you to muffle your sounds, then moving back down to suck on your collar bone. "Just like a demon, however, to show skin and be seductive; though no one could ever come close to what you do to me."

The voice in your ear made you shiver, and the burning sensation of the many bruises he was giving you, was making you dizzy in the best way.

"Castieeell," You moaned.

He smiled against you.
"Yes. My name is the only one that will fall this effortlessly from your lips. These marks on your neck, I know they'll show everyone that you're taken. Taken by me. I will be the one holding your hand tonight. I will be the only one who gets to taste that sweeter-than-sugar candy between your legs."

You were shaking and moaning underneath him now. All you wanted was for him to take you. He had never been this rough with you before, and it was one of the sexiest things he's ever done. Most of the time, he let his actions speak for him, but hearing his beautifully hoarse voice in your ear, talking dirty, more than he ever had, made you need him.

"These bruises are from me. Everyone will know you're mine."

For just a moment, you could feel his hardness against your thigh, then suddenly, he was gone. All of him. He had gotten off of you and walked to the other side of the room, adjusting himself in the mirror.

The world around you was hazy, your eyes filled with lust, but you managed to sit up and stare at him while he bent down to pick up your trident.

"Let's get going. We wouldn't want the children next door to be mad that their caretaker didn't show up to take them Halloween-ing."

He held your trident out to you, and you sat up shakily. You grabbed the trident and tried to catch your breath. He was smirking at you the whole time because he knew damn well what he did to you.

The doorbell rang before you had the chance to plan your revenge, and he grabbed your hand to drag you downstairs, giving you one last kiss on the lips...

What a fucking tease.