This is getting out of hand, Sans knows this but could not help himself!

He, the magnificent Class President, most popular monster in the school do to his cute and energetic nature. He is friend to all, first to get invited to any party, all the girls want him and all the guys want to be him. Yes, such a a studious student, placed upon the highest of place on anyone contact lists, is nothing but a pawn to his urges.
Oh stars, how scandalous!

You are the total opposite of Sans; quite, reclusive, loner and all around background character.A student such as yourself is never invited to parties, never spoken to, never noticed by anyone of the school - including teachers… but… Sans notice, the crushing skeleton notice every thing you do, no matter how under the radar your actions are, your actions never escapes his enamored gaze.
You are the object of his heart, soul and primal desire. He is completely smitten by you and its because of these strong feelings he has a deep fear of rejections from you. Like every school crush he keeps it to himself all while watching you - hoping and wishing for what could be.

Today is like any other.  Math class is progressing ever so slowly, the teacher drawls on about formulas that Sans is all too familiar with. This gives him time to set his half mast blue orbs towards you. A cross the room, lost within your daydream, you gaze out into the window to the left of you. Mind so far away and body running on auto pilot, you bring your pen to your lips and begging to nibble - a habit at best, but it often calms your daily anxieties.
Wowzers, Sans had no idea the sight of someone just mindlessly biting their pen could be so… thrilling. The way the pen is held against those soft supple lips, the stout skeleton wonder so fondly how they would feel upon his bones. He swallows back the urge to lick his teeth, his mouth feels so dry.

Sans feels his breath silently hitch as your tongue laps against the pen, only for a quick second before going back to nibbling. Dear stars, the action was quick but his skull seems to explode with so many ideas of what that tongue of yours could do to him. Mm, feeling such a warm and wet appendage lapping and slithering it’s way down his sternum, feeling your heated breath upon his ribs - his spine would arch as he whines your name. Sans could feel sweat forming on his skull.

Ahhh, why do you always do this to him, why are you so sexy to the skeleton, he mentally question himself as his feels his magic warm up and course through his bones. He has to stop this, his magic is reacting way too eagerly.
Star be damned, he’s the class president! He’s suppose to be a shining example of how students are to behave in class, how they should conduct themselves within the halls of learning! He needs to stop this! These sinful daydreams, this hot hungry want of your body and mind, these feelings of total admiration and infatuation of you.

Sans tore his sockets away from you and your somewhat erotic pen and lip play. He brings his eyes back to his notebook that lay abandon on his desk. The page held next to nothing, a bit of notes from the teacher lecture and then it just trails off to him writing your name; some with little hearts, others with him adding you and him to equal forever.

Dear stars above, why do you do this to him?

One of his legs begins to bounce under his desk - thoughts frantically running here and there, he wants to hate what you do to him. He wants so badly to hate how your voice in class cause his spine to shiver and his soul to race, he wants to hate how he love slightly touching your hand when he pick up paper work for the teacher and - stars above help him, he wants to hate how that smile of yours warm his bones.

He wants to hate it, but he couldn’t bring himself to turn these wonderful feelings into something so negative… If he were to be honest with himself, he actually loves what you do to him, quite a lot.
Libido winning over his mind, the skeleton let his eyes go back to you. His jaw clenches when he beholds the sight of you having the pen directly between your teeth. Oh, oohh, yes, to feel those dazzling whites on his neck. He would ask - no, beg for you to bite harder and you would chuckle in such a naughty way as you apply more pressure, ever so slowly.
Harder. Yes. Harder. M-more. Harder. Please, human, please! Harder! Almost-!

Crack!

You make a yuck face as blue ink spills forth into your mouth, you nearly gag at the plastic bitter taste as the dark solution dribbles from the corners of your mouth and  onto your school uniform.
Ugh, what a nasty flavor.
Raising your hand you ask to be excuse to the bathroom, upon looking at the mess you’ve become the teacher was more than willing to let you go.

Sans watches as you move pass chuckling and gossiping students, not giving them any mind, you open the door and close the door behind you. He already misses you, but currently he tells himself that it was for the best - he really needs to get back to taking sensible notes.
Sockets looking back down to his line papers, glowing blue hue fill his cheek bones as he spots the slight glow within his pants. Oh no. He mentally cure himself for his magic being so responsive to his lewd thoughts. He had to take care of this before the situation gets worst - aka gets brighter.

“EXCUSE ME, BUT I NEED TO USE THE RESTROOM.” He raises his hand.

“Fine, but hurry back.” the teacher nods towards him.

The hallways of the school is always so empty during classes,there hollowness accompanied by the sounds of muffle gossip and lectures within the passing classrooms.After taking his time and making sure no one is around to see his embarrassment, he happens upon the bathrooms. Eyes suddenly showing a sparkle of awed shock he notices you were at the water fountain still trying to get the taste of ink out your mouth.

He was suddenly speechless as he watch you bend over just right to take more sips - he always did fancy how your hips were so shapely and how your ass looks so perky and soft, his soul races as well as his mind. He can’t keep doing this to himself, he has to take a step towards change - this could be a positive change for all he knows. This could be his chance, no one was around to interfere. Taking in a breath he walks over to you.

“UM, HELLO I’M SANS” He gives you a shy smile - still feeling warmth in his cheeks he overs a hand towards you to shake.
You slowly stand straight, wiping stray water from your lips - via the back of your hand. You look from Sans nervous smile and down to his hand, ready to make contact until…. 

“Um, Sans, why are your pants glowing?”

Sans sockets goes blank as he wishes for the universe to end, right there and then.