Best of Dom!Sans x reader

Firsts

Made by Marcanine on AO3

"_____?"

The sudden call of your name causes you to jump and stare at your intruder. Leaning against the doorway was Sans, the light of your hallway cascading through your boyfriend's ribs like a sunset through blinds. It struck you he was shirtless and you felt the need to cover your eyes.

"nervous?" He asks, entering your bedroom and gingerly closing the door behind him. He comes to sit on the bed beside you, a large hand resting on your bare thigh as you look away in shame. "s'alright. i am too. we don't need to do anythin' you ain't ready for."

"No, no. I want this," you reassure him, suddenly sad as your hands clasp over his larger one. "It's just...the pain is scary, and I don't wanna disappoint you."

His hands drag up the curve of your half-naked body, cupping your face and turning you to him. He runs a thumb over your lips onto your cheek, wiping a tear you didn't even know you shed. His fangs were slightly dripping saliva in his need.

"shh, baby," he coos, left arm snaking around you and pulling you into his shirtless frame. "you could never disappoint me. i'm kinda afraid of the same thing."

You nuzzle into his chest and his arms wrap around you. He starts to slowly rock the two of you, whispering reassurance into your ear and practically draining you of the self-doubt that was plaguing your mind seconds earlier. His touches grow more intimate as he gently cups your ass, pulling you closer to his frame as his fingers brush the skin under your belly button, teasingly. You begin to explore his chest, fingers sliding down his sternum and hooking into his ribcage as the grip on your lower back tightens ever so slightly. He lies down on your bed, dragging you down with him as he places a bony palm on your chest, slowly pressing you into the mattress. His frame dwarfed you whenever you stood side-to-side with him, and the size difference became much more apparent–you felt like a mouse now.

He peppers your cheeks with toothy kisses as he gets on top of you, nestling between your legs, hands now resting on the clasp of your bra. The white lights of his pupils rest on your face, trying to pick up on any body language you express, unspoken words or pleas to stop. You muster up the courage to wink at him, and he chuckles, the rich laugh rumbling through his bones and tickling your skin.

"you're so beautiful, ya know that?" His usually smug grin was so genuine and real that your heart melted. "i'm so lucky, so fucking lucky," his warm phalanges unclasp your bra, and he slides it off of you, his eye sockets slowly widening as his pupils rake up your form. They dilate into the faintest little heart shapes as his fingers explore your skin. "fuck, you're soft."

Despite all of the sweetness, you feel yourself growing wetter. You unconsciously rub your thighs together and his hands still your movements.

"damn, is my baby girl needy?" He laughs at your embarrassment, tentatively dragging your panties down your legs, shooting you a smug expression as his hand cups your wetness. You gasp and slightly arch into the touch. Sans was a natural, it seemed, and you were so inexperienced...

Sans seems to sense your apprehension, and he leans down to nuzzle his skull into your neck, rubbing his hipbone against your core.

"i'll take care a'ya, i promise..." His low voice shifts into a growl as his jaw manifests with cyan light; the void of his throat becoming replaced with an electric blue tongue, flopping out and dripping with his trademark ectoplasmic saliva. "don't really know what i'm doin', but i did my research. google's a great thing, babe."

You can't help but giggle at that. The giant skeleton was most certainly not a virgin, but you were the first human he had ever been with, as well as the first meaningful relationship he'd ever been in. In the Underground, relationships went fast, as when monsters mated, they did so within days of the first date. Sans never clicked with anyone as much as he did you, and you were so thankful that he'd taken you on more than one date. Sans was too.