Lucifer makes a deal with Castiel and the Reader that will please everybody. But it’s up to the reader to accept.

Pairing: Casifer x reader

Warnings: restraint, gagging (kind of), oral (female receiving), breath play

Word Count: 1195

Note: I’ve never felt so dirty writing in public before. Happy Supernatural Smut Appreciation Day.

“Y/N.”

With one fluid motion, you had your back against the wall and your gun pointed at Cas’s chest.

You lowered it with a sigh. “Cas. We’ve talked about this. I know that a bullet won’t hurt you, but I would prefer not to shoot you either. You need to knock instead of just barging into my bedroom.”

“There wasn’t time. Y/N,” he slumped against the closed door, “I need to… tell you…” You rushed to catch him as he slid to the floor. The color was draining from his face and he had broken out into a cold sweat.

“We need to call the boys,” you started. Before you could shout, Cas had his hand over your mouth. With a flutter of wings, he pinned you to the bed. He held your wrists above you with one hand while the other continued to cover your mouth. There was a gleam in his eyes that you’d seen before, but not in him. Sam had it for a while. You gasped and struggled under his grip as you realized.

Lucifer.

His voice was higher than Cas’s. Playful. “You’ve always been the smart one, Y/N. I’ve been with the boys all morning and they haven’t noticed a thing.” Castiel’s face grinned at you, but with a darkness. “Then he actually pushed me out of the way for a bit. You are very important to him.” He twisted his head and shuddered, “easy Cassie. Don’t fight too much. Not when I’ve got your girl in such a compromising position.”

Your blood ran cold. What do you want, Lucifer?

“I want you to keep this a secret from the Winchesters. They are searching for something I need, but they’ll stop once they know I’m not Castiel.”

You glared at him, refusing to believe it was that simple.

“How about I up the ante? I’ll give you the thing you want most; you won’t even have to beg for it. Unless that’s your kink.”

How could he see that? You’d buried it long ago.

“I know you’ve been longing for it. And guess what? Castiel wants it too.”

For a split second Castiel broke through with a look that was so him. Ashamed, but questioning.

So, you’re going to buy my silence with sex?

He leaned forward till you could feel his breath next to your ear, “I guess I am.”

Goosebumps broke out over your skin. You blinked and he was naked as well. Your clothes were scattered around the room as if you both had hastily stripped.

“So which fantasy do you want? The slow and sweet? Or,” he deepened his voice to match Castiel’s, “the dark and passionate?” You moaned against his hand. “Alrighty, then.”

He made a show of levitating Cas’s tie towards the bed. He removed his hand from your wrists to make room as it tied you to the decorative gap in the headboard. Lucifer removed his hand from your mouth, but you could feel his grace preventing you from speaking. He hovered over you, nose to nose, smirking. You squeezed your thighs together as those crystal blue eyes darted down to your lips. He rocked his head again and growled before licking his lips.

“Don’t worry, Cassie. We won’t hurt her… much.” He turned his focus back to you, “Cas is too shy to take what he wants, and he’d be inept at giving you what you want. So, I’m going to make sure everybody is pleased, while throwing a few things myself. Good luck figuring out which ones are which.”

Lucifer crawled backwards down the bed till his face was above your thighs. He pried your legs apart, blowing cold air till you shivered. Tendrils of grace swirled up your body. They stopped at your nipples, twisting them and sucking as you arched. Lucifer hummed into your heat before licking a thick stripe. He laughed as you gasped and twisted under his ministrations.

“You like that sweetheart? This might be the best night of your life.”

He parted your lips with his tongue, thrusting deeply. Cas’s tongue morphed into Lucifer’s fork, which he used to scissor you open. It was an odd sensation, but not uncomfortable. Another tendril of grace snaked around your hips to your clit. It gently touched the tip, just enough to let you know it was there. Lucifer held you down from bucking up to him. His thumbs swirled circles into your hip bones. You wined behind the grace.

Please…

“Please what, Y/N. Begging already? We’ve barely started.”

Please let me come.

The grace covering your mouth slid away. He stared up at you between your breasts, daring you. “Please let me come.”

He darted his tongue into you deeper than what should have been possible. The tendril above your clit sucked down, sending you flying into bliss. Lucifer gently sucked up your juices, careful of your sensitivity, then moved up to kiss you, making you taste yourself. Something that had to be the devil’s thing.

“Are you sure about that?” he asked with a wink.

He didn’t give you time to respond before sinking into an inch at a time. He pulled your legs over his shoulders till his hairs met yours.

You sucked in a breath, “oh Go-.” Lucifer thrust a little further to hit your cervix, making you cry out.

“Let’s leave him out of this.”

Lucifer pulled nearly all the way out before slamming into you and setting a punishing pace. The tendril of grace above your clit kept reminding you of its presence but did nothing to further your arousal. He groaned and grunted above you. His eyes were shut, but light seeped out from under his eyelashes. His hips faltered for a second, but he laughed.

“He’s really enjoying this, Y/N, your precious Castiel. Should we show him one more layer of you?”

Lucifer reached down and encircled his fingers around your throat. You panted for air and felt your walls clench tighter. The grace preventing you from speaking evaporated, leaving room for you to gasp and wheeze.

“We’ll remember this for next time.”

You couldn’t even fathom ‘next time’ as every nerve inside you seemed to snap. You cried out for Castiel as Lucifer released you. Everything went a bluish-shade of white as you orgasmed. Lucifer slowed his pace, then pulled out to spill onto your breasts. You were still recovering as Lucifer stood to one side of the bed.

“Aren’t you a beautiful picture, sweetheart. You might want to clean up before the Winchesters see you like that. We’ll catch you later, in every meaning of the word.” He took a step, then shuddered. “Fine,” he said, turning back to you. “Castiel wants me to clean you up and tuck you in.”

With a snap of his fingers, you were clean and dressed in some shorts and a tee. Lucifer leaned down and pulled the blanket over you as your consciousness started to wane.

“We’ll see you later,” he whispered in your ear. He laughed as you shuddered.

“Rest well, Y/N,” you heard Cas say in your head. Then you fell asleep into darkness, your silence paid in full.