Underfell sans x reader (lemon)

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An:i hope you enjoy the story please comment i want to know your opinions

Sincerely author-chan

Y/n pov

I fell into the underground about 3 years ago since then my life was changed forever,when I fell I was 18 and now i'm 21,Today is my birthday.A lot of monsters and they were mean at first but then as time came they got used to me.Right now i'm living with the skeleton bros sans and papyrus, they argue all the time it's annoying but i have a tiny... alright huge crush on sans even though he can so freaking​ stupid and mean,so for my birthday I planned to ask him on a date.I hope he says yes.

I was sitting I my room playing in my phone when i heard papyrus call me "Y/N GET DOWN HERE I HAVE SOMETHING FOR YOUR BIRTHDAY"so i got up and went downstairs to the kitchen and papyrus hands were behind his back and then he handed me a big box and to took it and said thankyou,then i opened it to see a black and red dress,black high heels with spikes and a necklace with a red stone in the middle,my e/c eyes lit up with joy and i jumped up and hugged papyrus thanking him and he just blushed and pushed me off.I grabbed the box and ran to my room to change into the outfit in the process i saw sans look at me in confusion but i shook it off a kept running upstairs

Sans pov

Why was she running so fast?PAP'S i yelled and he responded by walking in the room with a red blushing face,ok?why was y/n running to her room?he responded with"BECAUSE I GAVE HER A PRESENT AND I ASSUME SHE WENT TO CHANGE INTO IT"ohh ok that's reasonable.I got her a present to i'll judt give it to her when she comes back

Y/n pov

I put on the clothes,shoes and necklace then i curled my hair and went down stairs to show them,i yelled"I'M COMING DOWN"then i walked downstairs.Sans and papyrus turned and blushed super hard and i smirked and sat next to sans the couch and he started to talk and he said"hey p-pet you look pretty i m-mean hot uhhhh" he turned away with a red face then i started to blush and think about asking him out,i decided to do it.I bit my lip and put my hand on sans shoulder,he looked at me and smiled,i screamed internally saying"HE'S SO FUCKING HOT OMGOMGOMGOMG"i took a deep breath and spit out all the words "sansdoyoumabyewannagoonadatewithme"it took him to process what i just said then he exploded in red and faced me

Sans pov

I exploded in red,did y/n just ask me out.I turned to her and i stayed silent then i answered"yes i will"she jumped with joy then she hugged and kissed my cheek and ran to her room.I was pretty excited to go on a date with her but why did she pick me?well i doesn't matter i need to prepare for the date,then i dashed to my room.

Time skip past date and paps leaving to train with undyne

Y/n pov

I had a great time at the date with sans.I'm sitting on the couch with sans cuddling and he randomly pulls me on his lap and kissed me deeply

Lemon starts here

I gladly kissed back and he licked my bottom lip asking for entrace i opened my mouth and sand explored my mouth claiming it as his then we broke apart for air then i asked him can we take this to the bedroom and he teleported us to his room then i crawled on the bed and sans got on top of me and smirked,he dove into my neck instanly finding my sweet spot and abused it,next her snapped his finger and we were both naked,sans just staired at my body then said"your so beautiful i like you like this better"i blushed then moaned because he groped my breasts,sans snicked then squeezed them harder making me moan louder,him doing this turned me on and i was now soaking wet.Sans stopped squeezing them and licked my buds making them hard,he kissed me deeply while slowly puting a finger in my entrace making me moan into the kiss and he pulled away from the kiss added another finger making me scream in pleasure then sans said"yeah scream for daddy he's gonna make you feel even better"that turned me on more and made me wetter,then without warning he lowered is head and shoved his tongue into my wet heat and you gasped and moaned"ohh yeah daddy that feel good" as you could feel him moving. A knot began to form in my stomach and then i climaxed on sans tongue and he licked up the cum and gave me a look full of lust.He placed his member at my entrance then pushed in slowly he said"dam baby girl your so tight ,tears pricked my eyes and i was in pain.Sans diddn't move,he was groaning giving me time to adjust to it,then the pain slipped away and all i felt was pure pleasure i moaned"move daddy please" then sans started to move at a moderate pace saying"ohh baby you feel soo good warm and wet and i told him to" go faster daddy"and he went faster we groaned and moaned together, then i felt a knot in my stomach and i climaxed on his member and not long after that he climaxed in me filling me up when he pulled out i was gushing red cum.Sans fell on my chest and managed to say

I love you baby girl

I love you to sans

Then me and sans went to sleep

Bonus*

The next morning sans asked you to date him and you said yes in happiness,then he gave you the present that he diddn't give to you yesterday.It was a necklace with two halves of heart with you and sans name on them and you put it on and hugged sans and gave him a peck on the teeth then you cuddled him

The end

Omg thid was soo long i hope you like it bye ohh and don't forget to coment

Omg thid was soo long i hope you like it bye ohh and don't forget to coment

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