I have an idea for a sweet/sad prompt. Reader is a stranger that randomly dials numbers when she's soul achingly lonely and has managed to get the Skelebros on different occasions. She admits somewhere in her call why she's doing it. Maybe they run into each other, as a broherd or individually.
@vivacious-hyena Sorry this took so long to finish, but I hope you enjoy it! <3  It was a ton of fun to write!
The first time you call Sans, he humors you. Â His voice is thick and groggy, like you woke him up, and you feel guilty, but he brushes your concern aside. Â "yeah, i jusâ woke up, but hey. Â wakinâ up to a pretty voice is almost like wakinâ up next to ya, so iâll let it slide.â
He flirts with you pretty heavily the entire phone call, and the more alert he gets, the more dirty puns he comes up with. Â Youâre blushing, but emboldened by the anonymity of the encounter. Â You flirt back.
"is this somethinâ you do often? Â callinâ random numbers to flirt with strangers?â
âItâs just something Iâve always done when I was feeling especially lonely.â
Sans can relate to that feeling.
The second time you call Sans, heâs drunk at a bar.  You can hear a lot of noise in the background, but he sounds like heâs in a good mood.  He flirts immediately, but then you hear someone elseâs voice in the background⌠and you realize he was flirting with them instead.  You shouldnât feel an irrational surge of jealousyâof rejectionâbut you do. Â
Months pass before you call Sans again. Â Youâre not even sure why you saved his number in your phone. Â Youâre just feeling particularly lonely and want someone to joke around with you, to make you feel like youâre wanted.
You donât expect Sans to remember you, but he does. Â He sounds like you woke him up again, and it makes you wonder if he does anything but sleep and drink. Â You actually blurt that out, but instead of feeling insulted, he just chuckles. Â The deep sound of mirth does something wonderful (and terribleâyou shouldnât feel this way over a disembodied voice!) to your insides. Â
âwhy donât'cha join me?â
Youâre in a low enough place that you accept on the spot. Â
The next thing you know, youâre all dressed up and at a bar with a purple fire elemental serving up the drinks.  He told you to wear something red, so youâve got on a vibrant red dress (or a red tie or red shirtâtake you pick).  After a few moments of sitting at the bar (and ordering the most delicious monster alcohol youâve ever tasted; that flamesman is a miracle worker), you feel a hand graze across your back, and you turn to faceâŚ
A skeleton monster. Â Heâs smirking, his teeth sharp and a golden canine glinting in the flamesmanâs light, and his crimson eyelights flick up and down your body appraisingly. Â From the way his grin widens, you can tell he likes what he sees.
Youâre still staring, flabbergasted. Â You didnât expect him to be the living dead. Â
âheh, sweetheartâŚâ  His voice trails as he takes a seat on the barstool beside you. âwhy donât you take a pitcher?  itâll last longer.â  He chuckles, and the pun is enough to shock you out of your trance.  "seriously.  letâs get a pitcher of something and chat.  nameâs sans.  sans the skeleton.  probably shoulda mentioned that bit on the phone, huh?â
When you shake his hand, he actually gets you with an electric buzzer and then laughs. Â "donât look so shocked! Â itâs jusâ a buzzer, doll.â
Heâs right. Â Youâre going to need more alcohol to get through this.
You end up matching Sans shot for shot.  He drinks you under the table.  You tell him all about yourself, why you feel the way you feel, and regale him with other tales of people youâve called in the past.  You divulge your secrets, and his grin tightens.  He tells you jokes and dirty pick-up lines, and you flirt and flirt.  You get handsy, curious about the feeling of his bone and how his face can seem so animated.  "Bone shouldnât be this pliable.  It just shouldnât.  Shit, Iâm hitting on a skeleton,â you slur, your fingers dangerously close to his eyesockets while you explore his face, and his hands loosely grasping your wrists.  "Can.. can you even..?  Do you even haveâŚ?â
âwhy not find out first-hand?â he prompts with a wicked grin and a shrug.
And you do. Â Oh, you do. Â
(It turns out he does have the goods.)
And by the time a tall, boisterous skeleton runs you off in the morning, while youâre cringing and trying to shhhh him because your head is killing you, you begin to have regrets. Â Youâre not a one-night stand; you canât believe you actually think heâs charming, and now that heâs gotten what he wants, he wonâtâ
The first time you reached Papyrus, he was annoyed. Â How did some stranger get his number?! Â He didnât buy the ârandom coincidenceâ bit and thought it was a prankâor someone just trying to rattle him. Â
âDONâT EVER CALL THIS NUMBER AGAIN!!â
The second time you call him, youâre not entirely sure why. Â Maybe you were feeling particularly down and just wanted someone to kick you further into the abyss. Â He can hear it in your voice, and even though heâs frustrated (âYOU AGAIN!!â), he doesnât automatically hang up. Â He rattles off a list of people he suspects you to be, and when you deny each one, he starts to believe you. Â
âThatâs a lot of people that you assume would mess with you,â you remark, and he scoffs.
âITâS TO BE EXPECTED OF THE GREAT AND TERRIBLE PAPYRUS! Â EVERYONE IS INTIMIDATED! Â THEY ALL END UP BEING IN MY SHADOW, SO OF COURSE THEYâD DO SOMETHING LIKE THIS!â
âHow can you be great and terrible at the same time?â
He proceeds to tell you about his exploits in the Royal Guard for the next hour. Â He barely even takes a breath.
The third time you call him, youâre having a Bad Day. Â "I SHOULDâVE KNOWN YOU WOULD CALL AGAIN!â
You donât return the greeting.
Papyrus listens to you cry for nearly a half hour. Â You only know heâs still there because you can occasionally hear the scrape of the phone against the side of his face. Â You didnât even know he could be that quiet. Â
ââŚSorry,â you end up murmuring, before you hang up.
A week passes, and youâre too embarrassed to call him again. Â You beat yourself up over your moment of weaknessâof showing him such an ugly side of yourself.
But that night, he calls you.
Youâre shocked to see his number pop up on your phone, but you answer anyway. Â Immediately, he blurts, âWHERE ARE YOU?â
âWHERE ARE YOU? Â MEET ME SOMEWHERE.â
The request seemingly comes out of nowhere.  You end up complying and giving him a location to meet you, and when you do⌠you immediately recognize him just from his confident stride.  And holy crap, heâs tall and scary-looking.
âI didnât expect you to be a skeleton monster.â
âI EXPECTED YOU TO BE A WEAK HUMAN, SO AT LEAST ONE OF US WAS CORRECT.â  He glowers down at you, his expression a constant scowl.  You begin to rethink this meeting, but something in your own expression causes his gaze to soften slightly.  "âŚCOME ON. I MADE RESERVATIONS,â he claims, gesturing for you to follow.
Papyrus treats you to dinner, and throughout the meal, he prods you into talking about yourself. Â He even pays for your half, despite your insistence that itâs not necessary. Â Afterward, he takes you on a walk through the town, simply meandering along the sidewalks. Â Youâre bolder now and end up talking the entire time, while he listens in contemplative silence. Â
At the end of the night, he pauses, his face turning a shade to rival the tattered scarf wound around his neck.  â⌠THIS DATE HAS BEEN SUCCESFFUL, HUMAN.  I KNOW THAT YOU WONâT BE ABLE TO RESIST WANTING ANOTHER ONE WITH SOMEONE WAS GREAT AS I, SO IâLL SAVE YOU THE AGONY OF BEGGING AND CONCEDE.  YES, WE CAN GO OUT AGAIN THIS WEEKEND.â
You stare at him, flabbergasted for a full thirty seconds before you stammer, "T-this was a date?!â
He calls you every day after that. Â
Sans is beyond excited that youâve called him. Â He instantly wants to know all about youâwhatâs your favorite food, your favorite color, do you like puzzles, whatâs your opinion about glitter? Â When you ask him about himself, he informs you that heâs the MAGNIFICENT SANS. Â After a while of talking, he declares that he realizes the TRUE INTENT of your call. Â
âYOU WANT TO BE FRIENDS WITH ME! Â ITâS CLEAR THAT WEâVE MET BEFORE, AND YOUâVE JUST BEEN TOO SHY TO APPROACH ME! Â THEREâS NO REASON TO BE INTIMIDATED BY MY MAGNIFICENCE! Â OF COURSE IâLL BE YOUR FRIEND!â Â
He says it with such genuine sincerity that you grin and agree.
Sans texts you every day after that call, his messages in ALL CAPS followed by several exclamation marks. Â His excitement is contagious, and his cheerful messages brighten your day. Â If you donât call him at night, then he calls you. Â He always asks about your day, and even the little menial details intrigue him. Â You feel as if he really listens to youâthat he actually cares about the conversations you had at work or the stupid pictures you laughed at online. Â
He sends you pictures of puzzles, followed by selfies of him grinning broadly with a man in an orange hoodie photo-bombing the background of each one. Â Youâre surprised to discover that heâs a skeleton, but when you send him a selfie back, you find that he thinks humans are fascinating. Â Youâre given the green light to ask all the questions you want (âWhy do your eyes sometimes look like stars? Â How do your cheeks puff out? Â How do you eat? Â What was it like Underground?â) and he asks about your life on the Surface and what you thought when the barrier broke. Â
Somewhere along the conversations, you admit to him that you feel less lonely ever since you called him.  He sounds so proud and so excited when he responds with, âTHATâS GREAT, HUMAN!!  IâM A MAGNIFICENT GUY, AFTER ALL, SO OF COURSE IâD BE A MAGNIFICENT FRIEND!  AND YOU KNOW⌠YOUâRE VERY MAGNIFICENT YOURSELF, SO IT WOULD BE A TRAGEDY FOR SOMEONE LIKE YOU TO FEEL LONELY!  IF YOU EVER FEEL THAT WAY, CALL ME IMMEDIATELY SO I CAN FIX IT, OKAY??â
And you do.  Even in the times when you donât feel like you should bother him, he always seems to call you first.  You get so close to him, that when he invites you to have lunch in the park, you accept without hesitation.  You end up on a picnic with him and his brotherâand you even meet Alphys, a reptilian monster with even more spunk than Sans.  She convinces both of you to run laps around the park while her girlfriend Undyne and Sansâs bro Papyrus lie in the shade and watch.  Theyâre all really accepting of you, and you⌠donât feel so alone anymore. Â
That night, when Sans walks you home, you slip your hand into his. Â Surprisingly, his face lights up a bright blue that glows in the dark, and you laugh and call him a nightlight. Â He gets flustered and pulls his hand away, so you end up walking with your arms around his neck, jokingly trying to console him. Â Blueberry grabs your arms and swiftly pulls you onto his back, and then grins as he gives you a piggyback ride home. Â
When he drops you off, you kiss his glowing cheek and thank him. Â His face glows even brighter, and he remarks confidently, âMWEH HEH HEH, FOR SOMEONE AS STRONG AS THE MAGNIFICENT SANS, CARRYING YOU IS A BREEZE!â Â
You score a solo-date with him that weekend and exceed all of his standards with your sheer Dating Power.
Stretch realizes youâre a stranger the moment he picks up the phone. Â After all, there are very few people that actually know his number, and those that do know that heâs a texter rather than a caller (with the exception of his brother; heâll always answer his phone calls). Â He was expecting you to be a telemarketer he could mess with, so he starts off with his usual âis your refrigerator running? Â ok, iâll bring the brewskis over.â
âOkay, bring 'em over. Â Iâll drink with you,â you reply, and he realizes quickly that youâre not attempting to sell him anything. Â He chuckles in his surprise and starts chatting with you about drinksâthen honey, then sweets, then about how you sound sweet. Â His voice is smooth and relaxed, his chuckle rich and amused. Â You like his voice, and closing your eyes, youâre able to imagine him lying next to you on your bed in the bed, murmuring into your ear.
You end up falling asleep talking to him. Â
The next day, he texts you. Â
Smooth like Honey: âif youre feelin phonely tonight call meâ
Was that⌠a crappy phone pun?  You may have mentioned that you called him because you felt lonely and just wanted to talk to someone.
You call him again, and heâs just as nice. Â This time, you hear someone boisterous in the background and discover he has a brother. Â His brother insists on talking to you. Â "HELLO! DO I KNOW YOU? Â I DONâT?? Â ME? Â IâM THE MAGNIFICENT SANS!! Â DO YOU LIKE TACOS?â
You end up getting invited over for a taco dinner. Â You politely decline because you know that meeting strangers at their house for tacos is a good way to get made into ground beef. Â Sans seems heart-broken. Â
You and Papyrus keep in touch through texting throughout the week. Â The next time you call him, youâve had a bad week, and youâre drunk and want him to bring over those brewskis. Â You vaguely remember texting him your address, but he does show up. Â He doesnât have alcohol, and you remember blurting something like "Youâre a fucking skeleton!â which he may have countered with âyeah, youâre right, hun. Â iâm a skeleton that fucks.â Â Heâs got a lazy grin and a lollipop between his teeth, and you end up clutching his hoodie on your couch, all of your inhibitions obliterated as you ask him to just talk to youâright by your ear.
âhoney, do you like my voice that much?â
And then you may have ripped that sucker out of his mouth and kissed him.  You canât remember.  You know you wanted to do it, but everything gets fuzzy after that.  All you know if that you wake up throwing up into a trash can with Stretch rubbing your back and looking tired, and you grasp at the bits and pieces of the night before.  Heâs really here; heâs a skeleton, but heâs a rather attractive monster with a grin that gives you butterflies and a voice that makes your toes curl, and you just⌠ruined everything. Â
Surprisingly, he stays and takes care of you, watching Netflix on the couch and making sure you drink enough water. Â He teases you for becoming a vomit dragon, and asks if kissing him was really that repulsive. Â You turn bright red and stammer out apologies, but he shrugs all of them off. Â "weâve all been there. Â do you want me to go home?â
He slips an arm around your shoulders and drags you against his side.  "then i wanna stay  itâs as queasy as that.â Â
So, he stays. Â He ends up asleep on the couch halfway through NTT re-runs, and you nap against his chest. Â The next thing you know, youâre dating and going over for Taco Thursdays with his brother.
These got kinda long, so Iâm skipping the SF!bros, but just pretend Blackberry was a jerk at first and then tsundere, and then kinda thirsty and demands you be his because "ITâS OBVIOUS YOUâRE HOPELESSLY IN LOVE WITH ME! ITâS NO COINCIDENCE THAT YOU CALLED ME! Â ALL OF THIS WAS PLANNED FROM THE VERY BEGINNING! Â SO FINE! COME OVER TO MY HOUSE AND SHOW ME YOUR PASSION IN PERSON!!â
And SF!Paps straight-up talks you into phone sex with him, before coaxing you into meeting him to make your conversations a realityâonly you didnât expect a skeleton monster.
âŚ.I actually realllllyyy want to write that as a one-shot now. Â