His New Favorite Color

“You sure Paps is gonna be okay with you staying over?”

You'd already ask this, even before you had curled up together, under the sheets of your bed. It made you nervous, the thought of Papyrus being all alone. Sure, you knew he was safe and that the two of you were only a yell, text, or call away. Nevertheless, you were worried for him.

“just like ya told me,” Sans pulled you closer, stroking your hair, “paps can take care of himself.”

“Yeah, but,”

He cut you off, lifting your head from his chest to face him instead. “are you really gonna argue bout us finally getting some alone time?”

You couldn't help but laugh. The idea almost made you nervous, you were so far into the relationship now! And yeah, it's not like you hadn't thought of it before, but he was a skeleton.

Sans broke your train of thought, leaning down to kiss you. The kiss was abrupt, harder than normal, and oh so good. It couldn't be more perfect, the way he kissed you. Well, the position could be.

You had to admit that it was an awkward position for both of you. He was already bent down, and the way your head was facing him wasn't the best. Of course, you could always make this easier, but….

Aw, fuck it.

Just as you felt that familiar brush of his tongue against your lips, you made your move. Twist your body, swing your leg over his both of his, shift your weight to his lap. Easier said than done, but you managed to do it without disrupting the kiss.

At least you thought so. Sans broke the kiss, pulling back slightly to look at the situation as you both gasped for air. You could still see the bright blue glow behind his teeth as his eyes raked up and down your body. If your face wasn't red before, it sure was now.

“W-what?” You stuttered, swallowing hard. There were a million thoughts running through your head, each quicker than the last but all too fast to concentrate on any of them.

You could see Sans trying to figure out the right words, trying to piece them together. “you okay?”

“Yeah? Are you okay?”

“yeah.”

“Is, um,” you motioned to your position with your hands, “is this okay?”

“course, babe.” He leaned in for another kiss, this one landing on your neck. You squeaked, biting your lip in fear that you'd laugh. Sans moved the kisses up and down your neck as you melted into him, helpless in his embrace. It's not what you expected from tonight, but God was it great.

After what must have been a few minutes and some oddly stinging parts on your neck, you started tracing up and down his arms, trying to recall all of the names. This is what you studied for, right?

“watcha doin there?”

Beginning at the tips of his fingers, you listed off the bones. “Phalanges, metacarpals, carpals, ulna and radius,”

“are you gonna tell me somethin humerus?”

Grinning, you ran your fingers up the bone and to his collarbone. He shuddered, and just then you thought about how it must feel to him. “This is your clavicle, and even though I can't see them,” you fought any idea of laughter, any goofy smile from your face. “Your ribs.” You could feel each individual bone as you ran your fingers down his shirt in one swift motion.

Sans gasped loudly, his face as blue as his tongue. “holy shit, babe.”

“Did I get them right?”

“mhm,” he pulled you to him, crashing your lips together.

You weren't thinking about it when your hands started tracing up and down his spine. You weren't thinking about it when you kissed him harder. You weren't thinking about it until his tongue was exploring your mouth like it had never been there before. God, all jokes aside, you really did want to bone the skeleton. Sans kept pressing against you, which only made you press against him in return.

Eventually the two you had to breathe, and Sans took that second of air to talk. “i’ve got somethin to show ya, if it's alright,”

Nodding, you trailed kisses from his mouth to his jaw, working your way to his neck as he talked.

“i was doin some research,” he paused to stare at you, “about humans.”

“Sounds interesting,” Your nerves subsided as you kissed his neck, finally calming you.

“more like a human…. activity.”

“What, like football or something?” You finally broke away, sitting back.

“no, no,” He shook his head, he eyes locked on you, “‘s more of a two person thing.”

“Dancing? You already know about that Sans.”

“babe,” Sans’ eyes locked onto yours, like he was telling you without words.

“Oh? Oh! Oh my god.” No matter how much you had just been thinking about the same thing, you still blushed. “Yeah, no, I get it. And besides, I already know it's impossible, you being a skeleton and all.”

“i have a tongue, don't i?”

“Okay, yeah, a magical skeleton.”

He groaned, leaning back against the headboard, “if i could make a tongue, couldn't i make other things?”

You say there, looking at him confusedly. “Wait, like, you could make a-”

“not to sound weird or anything, but yeah, i think it'll work.”

“Why would that make you sound weird?”

“kinda had to… test it out.”

“So you can, like,” you bit your lip, trying to not look down to his waist. His waist, that you were sitting on. “Oh, geez, I,”

“babe, we don't have to-”

For once you interrupted him, shaking your head quickly. “No, no, I want to. God, I want to.”

“have i, uh, ruined the moment yet?”

Instead of answering, you kissed him again, pushing him against the headboard. The kiss wasn't as gentle as the others, it was hungrier, needier. Before you knew it his tongue was making its way into your mouth again, and your thoughts traveled to other things that he could do with that tongue. You were lost in thoughts and emotions, only drawn back by the boney hand on your ass.

You moaned into the kiss, which prompted more groping. Sans’ free hand played with the hem of your shirt for an agonizingly long time before sliding under, slowly coming to your bra. You could feel him pause for a moment, wondering what to do. Painstakingly pulling apart again, you lifted your shirt above your head, tossing it to the side. You started to unhook your bra, but the skeletal hand on top of yours made you stop.

“you're doin my job there, babe,”

“I just figured it'd be easier, I guess.”

“i gotta learn for next time, right?” He chuckled, taking your hands away so that he could figure it out himself.

You couldn't help but smile. He thought there'd be a next time. He wanted there to be a next time. As he fiddled with your bra, you started to wonder exactly what kind of research he had done. Sure, you'd expected to do a lot of guiding anyways, but what if something went wrong? What if it just didn't work- monsters and humans. Sighing, you slipped off of his lap, turning around so he faced your back.

“Okay, you see the clasps, right?” He nodded, and you took his hands in yours, helping him unhook it. “Like that, almost every time.”

“almost?” He sounded panicked, like they were a labyrinth to begin with.

“Unless I'm wearing something fancy, or if it-”

Sans was working the bra off of your arms, and you were suddenly all too aware of how naked you were.

“c’mere,” he turned you back to him, taking you in breathlessly. His eyes danced over your body, up and down, and just as you thought he was about to finally say something, he'd look you over again, like he couldn't believe his eyes. “wow,”’ he breathed.

“Well, uh, care to join in on the fun?” Grabbing his shirt, you pulled it over his head before he had the chance to make a joke or fluster you more. You went to throw this one too, but stopped, breath hitching in your throat as you looked at the person in front of you. You'd expected him to to look like any old skeleton, like in books or museums. But no, he was so much more detailed, the light bouncing off of his ribs in a way that made them glow. There were little nicks and scratches, just like any other bones you had seen. But still, he was so perfect.

“take a picture, it'll last longer, sweetheart.”

Your eyes flew up to his again, and you smiled at him. “You're just so…” There weren't words, or at least, none that you could think of.

“you too,” Sans brought you to him again, kissing down your neck, to your collarbone, pausing before he went further. “could you, uh,”

“Mm?” You asked, your eyes still closed.

“i need ya to lay down.” He spoke as if you'd scold him, relieved when you simply obliged. How he didn't notice the heat rushing to your face, you had no idea.

Sans, to his own credit, really had been doing his research. Even with all of the breaks in between, he could get you instantly back to that near blissful phase. After getting on top of you in the most awkward manner, he worked that amazing, magical tongue down your neck, but this time you knew he was biting. His hands moved back up, slowly starting to play with your boobs. It was obvious that he was experimenting- what was too hard, too soft. When he flicked your nipple and you let out a surprising moan. When he finally brought his mouth down and you gasped louder than before, your grip on his ribs tightening as you whispered his name, low and breathy. When his tongue finally moved lower and lower until he was at the hem of your pants, and you were already so excited.

“is it okay if i-”

“Yes.” You didn't even have to think, you just wanted to get there already. Your skin was buzzing with his magic, and you just couldn't wait any longer.

He was suddenly taking his time again, pulling your pajamas bottoms off as slowly as he could. He knew it was driving you nuts, to lay there, writhing as he took you in, helpless under his grasp, but unable to reach him well enough to give him attention too.

“wow babe, I might not even need to-”

“Sans!” It was somewhere between a whine and a moan, too impatient to wait.

“somethin i can help you with?”

Was he really going to pull this? Now? Oh, God, he's got a hand on your chest again, that perfect pressure that he figured out so quickly. No words came from his mouth after a heated silence. He really was gonna make you ask. “S-sans, please.”

“waddaya want?” There was a hitch in your breath, Sans running his finger against your underwear.

“I want- I want you.” It was so infuriating that you were so sensitive to his magic.

“oh?” He was suddenly against you, kissing you roughly.

You took your chance to yank down his basketball shorts, followed by your underwear. They could have landed anywhere, you were too preoccupied to look. Before he could try anything sneaky again, you attacked his neck with kisses, sucking and gently biting at parts. You already knew that he wouldn't have marks afterwards, but it didn't stop you from trying. You got to his clavicle, running your tongue along it. He rewarded you with a groan, to which you gladly did it again.

“I can't w-wait any longer, please,” you whimpered under him.

Sans nodded and broke his connection to your chest. You sat up on your elbows, watching as his blue magic pooled in his lap- you cursed yourself for not thinking to grab onto his pelvis earlier. The magic was quick to form, a sudden magical-

Well, uh.

That sure is blue.

And big.

You slowly reached out, stroking him. Your hand didn't phase through. It was just as real as any part of him. You, whether it being out of curiosity or just to tease him, grip his member, pumping your hand up and down.

“sh-shit.”

“You okay?” You were aware again of how soaked you were, your body begging you to do something.

“can i-”

You sighed with relief, nodding as you fell back onto the bed.

“babe, you gotta-”

“Sans,” you looked at him sternly, “Yes. Please. Just-” you groaned, frustrated, but flustered still, “If you don't do it I'll do it myself, swear to G-”

Sans was at your entrance, on top of you again. “you were saying?”

You just nodded, already overwhelmed. You loved that he made so sure you were okay with it, oh god. He finally pushed in, and you moaned, all of the feelings sweeping over you at once. It was like kissing him, that electric feeling, but times a million. Sans was moving now, his mouth on yours again. You whimpered, your body feeling like it was on fire, and you loved it. He groaned, pushing deeper into you. Without thinking, you wrapped your legs around him, making him go even deeper. You moaned into his mouth, just as he moved again.

“babe,” He started kissing any place he could, any part he hasn't covered, “i love when you say my name,” Sans purred into your ear, his voice deeper than you'd ever heard. You could have came undone right there- but you could feel it, in the pit of your stomach, building and building.

Your fingers worked about his vertebrae, biting your lips to not scream. Eventually you give up on that as Sans speeds up, unable to resist. “Don't stop, don't st-st-” you breathe in sharply, your toes curling.

“shit, did i-”

“Sans!” They could've heard that across the hall, but you couldn't care less. “Keep-” you couldn't talk, you could barely breathe. How was this his first time?

“babe, i think-”

You nodded, grabbing his mouth before bringing him to your face to kiss him. Sans kept thrusting, and you could feel it, feel that he was about to- you were about to-

There was a collective yelling of names, and you felt him release inside of you. Your body went limp under Sans, feeling him twitch still as he pulled out.

He flopped down beside you, exhausted, “can you tell everyone that i never have to work out again?” Sans pulled you to him, almost close enough to call it spooning.

You snickered, shaking your head. “I think you should work out more often, actually.” Backing up into him, you realized that he hadn't gotten rid of his new little friend. Before you could make a remark, it was gone, allowing you to press against him.

The two of you stayed like that for a while, his arms around you, you purposefully rubbing against him, until you started giggling.

“what's up, babe?” He kissed the top of your head, smiling at you.

“Hey Sans,” he looked at you expectantly, “I've got the magic in me,” you sang in tune, a huge, shit eating grin covering your face.

You could tell that Sans new the song by the way he laughed, loudly and so sincere. “y'know, you're the most magical thing in my life.”