Undertale one shots

lust sans x reader (angsy)

Being sanses girlfriend is heartbreaking, he would always get drunk at grillbys and have sex with other girls yet you still loved him. The only reason why is because you were soul mates meaning your souls are connected also no matter what you both will love each other no matter what. If one of the soul mates were to die and break up with the other then the other/both of them will die from lack of hunger or thirst because of how depressed they will be about losing the other.

You were at the skelebros house watching mtt (everyone take a moment and feel sorry for this sad robot) until you got bored so you went to walk around snowdin. After a couple of minutes of walking you saw sans hanging out with a monster female and touching her in a sexual way 'he's doing it again' you thought to yourself as you went to walk back home and try to forget what you just saw.

You were almost out of sight from sans until he spotted you walking away clearly crying, he started to run towards you and stepped in front of you so that you would stop walking "babe please I'm sorry" he apologised clearly knowing how you felt right now "I promise I won't do it again" 'he's lying again' you thought. He would normally say that but not really mean it. You pushed him out of the way and started to run to mtt's place ,with tears in your eyes, ignoring sans shouting your name.

Time skip

Mtt was rubbing your back in a comforting way while hugging you on the couch (don't get any ideas perverts) "darling look I know you can't leave that horrible boyfriend of yours because of the whole soul mate thing but you deserve someone better cause someone's as beautiful,talented,kind and sweet as you deserves a true gentlemen" he says while wiping the tears from your eyes with a kind smile hoping you would smile back with your beautiful smile,you did and replied to Mettaton "thank you mom-" (sorry but I'm pretty sure goat mom almost rapes you in the game) you instantly stop yourself as soon as you said mom "sorry" you apologised quickly "oh it's ok darling if you see me as a mother figure you can call me that."

You went back home (you live with sans and papyrus) only to see sans with that other girl again while papyrus was cooking spaghetti you headed up to you and sanses room to just fall asleep and forget everything, in the corner of your eye you could see papyrus giving you a sad look cause of sans having fun with other girls while sans had a look of regret of sadness but you did not care. You went to bed and fell asleep but not before you heard the door open and felt a short skeleton get in bed with you while cuddling you with your back facing him.

You woke up the next day at 10:23 am and went down to get some breakfast "hey (Y/N)" you heard someone say, you looked and saw Frisk sitting at the couch giving you a wave, you waved back and got some breakfast so that you can sit on the couch with frisk.

"Me and Mettaton are going to a party in hotland wanna come?" Frisk asked
" sure " you replied 'the more I'm out of snowdin the better' thought as you put your plate/bowl in the sink with the rest of the dishes and followed Frisk to the party. The party was really fun and you even met a guy that was very nice to you and did not like this whole sex stuff, you and the guy went out of the party ,where it was silent, and started to joke around "ok what did the ocean say to the other ocean?" he asked you thought about it for a answer while and shrugged your shoulders not thinking of anything "nothing it just waved" you burst out laughing
" on god I don't think I have laughed or smiled this much in years, my cheeks are starting to hurt " you said while rubbing your cheeks, he also laughed and blushed at the same time.

It was the end of the party and you headed home and took a nap on the couch since you heard moaning coming from you and sanses room (I'm so sorry), you woke up the next day only to see sans on a chair next to you with a sad look in his eye sockets 'is he crying ' you thought "sans what's wrong?" You asked, sans shot his head and looked at you. He hugged you and shouted " I'M SO SORRY" this surprised you a lot but sans did not stop there "I AM SO SORRY FOR GETTING DRUNK AND CHEATING ON YOU SO MANY TIMES! HOW DO YOU PUT UP WITH ME? HOW DO YOU NOT HATE ME? WHY ARE YOU STILL WITH ME AFTER EVERYTHING I HAVE DONE TO BREAK YOUR HEART? I WANT TO BE THE GUY YOU DESERVE! I WANT TO BE STRONG,LOYAL,HANDSOME TALENTED,RICH AND BE THE GUY THAT YOU DESERVE!!! YOU STILL BEING WITH ME IS A BLESSING! WHEN I SAW YOU HANGING OUT WITH THAT GUY IT BROKE ME AND I JUST WANTED TO BURST OUT INTO CRYING!!" his voice cracks a few times  because of his crying, you hugged him and wipped the tears from his face "I forgive you".