---Timeskip to the next week---

You and Sans weren't even friends anymore. You loved each other so much that you two were more than friends, hell, even boyfriend and girlfriend. It was pretty quick.

One day you were snuggling on the bed, foreheads pressed against each other. You pulled Sans closer to you and laid on your back. He suddenly crawled up on top of you, grin widening. His cold hands were placed on your cheek as he massaged them. "you're so cute, babe..." He praised, closing his eyes.

Then he leaned in for a kiss, pressing his teeth against your lips. You kissed back and reached for his back. He closed his eyes, mouth opening a little. He started to blush. "aww, babe, you wanna rub my spine?" He teased. You pulled his jacket up and wrapped your hand around his spine and started to rub up and down.

His tongue lolled out. You already knew how sensitive his spine was. He kissed you again, his tongue exploring your mouth this time. Sans reached into your pants, rubbing your mound. You let out a few moans as the two of you blushed heavily.

Sans sat up, pulling his pants down. You saw a giant blue dick. Sans blushed and pulled your pants down. "you wanna do this?" He asked, making sure you were okay with it. "Yes." You replied, the cold air making you shiver. "don't worry babe, i'll warm you up." He leaned down and kissed your pussy.

Loud slurping sounds were filling the air as he looked straight into your eyes. You were humming soft moans, your body filled with please. "Sans, stop making those noises, you're making me so wet..." You teased. "well, that's the point." He said, tongue trailing inside of you. It wriggled around and you moaned louder, mouth opening.

His mouth exited your cunt, a string of your juices attached to his tongue. "you ready for my cock?" He asked. You nodded and hummed, feeling so empty.

"well, here i go. i'll go slow for our first time." Sans' cock prodded at your entrance, finally pushing in. He let out a huffed moan. "ahh, you're so tight..." He praised. You panted, his cock making a burning sensation in your womanhood. It eventually converted to pleasure when he started moving, making huffs and moans as his girth was filling you to the brim.

You covered your mouth, trying to keep quiet. Papyrus was here after all. Your blush was all over your face now. "mind if i go faster?" Sans asked, stopping for a minute. "Yes..." you responded.

He started thrusting a little faster now. It felt even better. You were inching so close to your orgasm. "Sans... I'm so close..." You said. His cock was pulsing inside of you now. "me too..." Sans said back, moaning a little bit louder. He went even faster, trying to make the two of you cum. "ah... haa... you gonna cum, (Y/N)?" You started moaning louder, grasping the sheets.

Before you knew it, an odd sensation filled you. Your walls clenched around Sans' cock, making him lose it. He moaned louder, finally filling you with his hot seed.

He pulled out of you, making you whimper. Sans rubbed your cheek.

"you did great, babe..." Sans praised before you fell asleep.