(Special thanks to @sinninghuman for something you'll see later)
You were talking about undyne with Alphys , I know it's a cringy start.
"She seems beautiful and strong, perfect for you right?" You smiled and continued to eat the noodles Alphys made.
"Y-yeah I-I-I guess s-so" she didn't return your smile and avoided eye contact with you.
"Alphys? What's wrong? Did something happen?" you stood up and kneeled in front of Alphys' chair where she was sitting and you placed your noodle smelling hands on top of hers. "You know you can tell me anything." She blushed turning her yellow ish face completely red.
"W-w-well it's n-nothing honestly I-I-I just ...s-she makes m-m-me so n-nervous" she gave a half cracked smile and looked around the room, you stood and sat in your seat . She stood and grabbed some Japanese cartoon.
"What is that?" You curiously eyed the disc.
"W-well it's called a-anime! If o-only I could open it..." she clawed continuously at the disc case over and over again.
"Here , I can open it." You grabbed it gently from her hands and clicked open the side of the case. "See you just uncliped this-.....Alphys?" You looked around but she was gone . Oh well, you'll come back tomorrow.
XX NEXT DAY XX
You knocked on Alphys' lab door.
"Uh ... Alphys? It's me! It's (y/n)! Open the door please!" You silenced yourself and listened closely to see that she wasn't answering you. You started to walk away when Mettaton opened the door and drug you in.
"Hello darling~" he smiled at you in which you returned it.
"Hiya Mettaton!" You then realized you were sitting on mettatons lap, oh well.
"So darling how are you doing? You look just fabulous!" He smiled and pet your hair.
"Oh thank you! You look amazing as well but I'm sure you already know that" you both laughed when Alphys came in.
"H-hey (y/n) ! M-Mettaton why are you here still? I thought you were hanging out with papyrus today." Mettaton rolled his eyes.
"Right sorry, I can't touch what's yours" he stood and left.
"Alphys what does he mean?"
She blushes And takes your hand in hers.
"(Y/n I like you....a lot"you blushes as well.
"What about fish face?" She giggled and looked into your eyes.
"I love you. Much more than undyne." You were quite shocked.
"Alphys I-" she quickly stood on her toes and kissed you, you without thinking much, kissed her back. You two had somehow made it into her room you pushed her back to the bed and then (being the clutz you are) slipped but you grounded yourself by grabbing the handle of the bedside drawer , ripping it open.
"Alphys is this a dildo?" She didn't respond she just went red. "Why the fuck does it smell like cherries??" She giggles and took it from you.
"I have no idea but I'm not worried about that right now. " she pulled you down on top of her and threw the cherry dildo aside. You slipped off her labcoat to see she was wearing a black dress. Eh, you took that off too. She began taking off your clothes easily sliding everything off.
"Alphys this isn't ,.. You're different."
Alphys dipped her fingers under your underwear. She moaned and whispered into your ear.
"You make me a different person." You arched your back and let out a moan.
"Is , is that a good thing?" You heard her smirk and chuckle a bit, you then flipped over to where you were on top. "I still like your sweet and caring, shy and weeaboo side." You felt her body heat up as you began kissing down her torso till you hit her underwear line. You looked up at her , she nodded and you slipped her underwear down. She shivered at your touch you began slowly to play with her using your tongue.
"(Y-y/n)" you saw she was pleasures but not close to her edge. You looked to the bedside and picked up the cherry dildo and began reading her with that. "This isn't fair to you , your not getting anything" you looke up at Alphys and after some talking you two were in the 69 position. (If you don't know what that is , pretend the two circles are heads ...) you continued playing wither dildo as you came close, you were new to this. (Maybe) you saw her start to loosen up an you began to push it in deeper. "Nng~" you waited for her to adjust, the last thing you wanna do is hurt her. You slowly started pumping and she entered a few digits into you.
"Aphys-" you couldn't finish before you felt yourself clench around her and put your liquid onto her fingers, she pulled them out and slowly licked the sticky substance. You pushed the cherry smelling dildo further into her and moved faster. You felt Alphys claw into your hips (not drawing blood n shit ) you moved yet again deeper and faster making her moan loudly and release , having some of the substance dripping down your hand you pulled the dildo out and set it aside . You then layer beside Alphys until you heard barking. You sat up and looked down to see the annoying dog holding the dildo in its mouth.
"Ah! How'd you get in?! G-give me that!!" You jumped up and put on Alphys' lab coat and ran after it. " Get back here you little-" you were infringement of Mettaton who was holding the dog in one hand and the dildo in the other.
"Hmmm~ interesting."
"SHUT UP"
"Heheh~ how was Alphys?"
"OHMYGODYOUSTUPIDFUCKINGBAGOFBOLTSISAIDSHUTUP!"(Hey guys I know this was kind of short but I want to yet again thank @sinninghuman for the cherry dildo idea. I know I need to update more ;-; sorry )