A/N: Funny story: last night I was tired and obviously not thinking clearly when I finished off the chapter. I honestly did not realize that the last few lines could be taken as a huge fucking foreshadowing. It was not meant to be; it was just meant to be like, "yeah they got their cool party plans all set and shit is about to get fun." So yeah. Sorry 'bout that.

This chapter and the next are like one huge chapter, but it was almost 8k words so I had to split it up. Enjoy!

Come have fun with me on Tumblr! Sheewolf85 . tumblr .com

Chapter 14

You pulled up to the skeleton brother's house with a nervous mix of excitement and terror in your gut. This was going to be a great time. You weren't exactly afraid of anything, per se. It was more that you were nervous about being around anyone in what you were wearing.

You had done a lot of soul-searching as you picked out your outfit for the night. The club you were going to was in the monster-dominated city of Ebott, so you were hopeful that you wouldn't have to deal with human men hitting on you and refusing to take hints like they usually did. Not to mention you would be hanging on the arm of a scary skeleton, so you knew you'd be safe. Still, it was only the third time you'd ever worn the black leather miniskirt, and the first time with nothing but your underwear under it.

You'd paired it with a black corset-style tank top. Objectively, you knew you were the definition of sexy. But thinking about yourself objectively was all but impossible when you knew you were going to be around monsters you didn't know very well.

Still. You'd worn what you'd worn for you and Papyrus, nobody else.

After another deep breath, you finally got out of the car. You'd worn sensible shoes at least, knowing the heels that matched your outfit would have murdered you halfway through the night. Instead, on your feet were a pair of black flats that were both comfortable and cute.

You didn't even have a chance to knock on the door before it opened and Undyne all but dragged you in.

"Heya, punk!" she all but shouted into your ear. Your face was smushed between soft blue boobs for a second before she allowed you to pull back. "Damn, you look sexy."

You blushed brightly as you stepped back. "Um…thank you?"

She was dressed in an extremely low-cut red jacket that contrasted well with her blue skin and matched her hair and gills. It connected below her breasts and just barely covered her enough to be considered a shirt. Silver studs dotted the collar, wrists, shoulder pads, and each side of the opening at her chest. She'd paired it with matching booty shorts that showed off how long her legs were and a pair of black boots that you would have said were army boots aside from the excessive height of the stiletto-type heel. They laced halfway up her calf where a Delta Rune sat proudly on the side. She was as tall as Papyrus without heels; you admired her guts. Speaking of her guts, her abdomen was in full view and showed off her very toned abs. She had a freaking eight-pack.

"You do, too."

Skeletal arms wrapped around your waist and pulled you back against Papyrus' chest. "COMPLIMENTING UNDYNE IS RISKY WHEN HER WIFE IS AROUND. ALPHYS WON'T HURT YOU, OF COURSE, BUT MAYBE WATCH WHERE YOU KEEP YOUR EYES." He kissed your head.

"O-of course. Sorry." You turned and looked up at your date, awestruck.

You already knew he would look good in anything, and it wasn't like you'd never seen him in a suit before, but there was something dangerously sexy about him in a vest. He'd worn a red button-up with the first three buttons undone and a black vest over it. He'd paired it with black slacks and, thankfully, comfortable-looking shoes.

"I…Papyrus…" Your hands went to his chest and slid up, feeling out the bones of his ribs. His hands were at your hips as he bent to kiss you.

"Yeah, if Al 'n I gotta restrain ourselves, then so do you."

Undyne physically pulled you away from Papyrus, and you felt more than heard a whimper escape your throat.

Papyrus cleared his throat and shot a glare at Undyne before pulling you back to him. He put his arm around your shoulders and smiled down at you.

"YOU LOOK VERY NICE."

"Do you like the skirt?"

Undyne snorted. "Is water fucking wet? Where's your lazy-ass brother and his boyfriend?"

Once again, Papyrus glared. "I VERY MUCH LIKE THE SKIRT," he said, staring at Undyne as he spoke. "IT'S SEXY AS FUCK."

Undyne crossed her arms, squishing her boobs together even more. "Hey Al, c'mere."

Papyrus smirked, his arm tightening just a little on your shoulders. You were confused for a moment before Alphys came in the room.

You'd seen pictures of her before. She was a short yellow lizard monster who was consistently seen in an unflattering white lab coat. Your jaw nearly dropped when she walked in.

She was wearing a tight red mini dress that could really only be considered a dress in the barest sense of the term. It covered her breasts and went down far enough to probably cover her ass—you couldn't really tell from the angle she was standing—and the color contrasted magically with her yellow skin. You noticed in passing that the color of her dress matched Undyne's outfit.

"Yeah, babe?" She leaned against the door frame and put one hand on her waist, jutting out her hip as she did so.

Undyne growled. "Angel above, you are sexy. Come meet Paps' girlfriend."

Alphys pushed away from the wall and her steps clicked against the floor as she walked. You glanced down and noticed she was wearing a pair of strappy black heels. She regarded you with a stern expression, something you hoped didn't mean she was judging you as unacceptable for her friend.

"Hi." You waved awkwardly.

Alphys nodded her head and leaned into Undyne. "It's n-nice to m-meet you."

She had a stutter! Oh, thank the lord above that she wasn't as perfect as she looked, because that shit was intimidating as fuck.

"You, too." You held out a hand, and both Papyrus and Undyne reached out to grab your wrist.

"Don't touch my girl," Undyne growled.

Papyrus growled back before all but shoving her hand away from you. He looked down at you then and kissed your forehead.

Alphys rolled her eyes. "I have l-low HP, so my wife is an-an-annoyingly overprotective of m-me." She looked up at Undyne and wrinkled her adorably cute muzzle. Undyne leaned in and kissed her. She stepped back, pulling Undyne with her. "L-let's go let the l-loveb-birds be."

Undyne nodded and turned with Alphys to go sit in the living room. You couldn't help but notice how the dress had been tailored around Alphys' tail, and you had to wonder what it felt like to have an inch or two of fabric rubbing the underside of her tail. You also noticed a tattoo of the Delta Rune on her back between her shoulders.

You turned your attention back to Papyrus when he kissed your head.

"You have some seriously hot friends, baby."

He snorted. "I THOUGHT YOU WEREN'T INTO GIRLS."

You blushed. "Well, I'm not, but that doesn't mean I can't appreciate aesthetic beauty when I see it." You leaned into him. "Speaking of, you look really hot."

He made you look up at him as he bent to kiss your lips. "YOU WORE THIS SKIRT TO TEMPT ME; I KNOW YOU DID. IF WE HAD TIME, I'D TAKE YOU UPSTAIRS FOR A QUICK FUCK BEFORE WE LEFT."

Your guts flipped in the best way. His words seemed to be at least part question, and you so wanted to give him permission.

Before you could say anything, however, Sans appeared in the room. He surprised you; he still wore jeans, but they weren't his usual ones. They were black, of course, but fit him like regular jeans, and he'd put on a red button-up shirt. No tie, and almost half the top buttons undone exposing a portion of his clavicles and sternum. He still wore the collar, but he'd left his jacket off.

"'sup, sugar. damn. you look nice." He winked at you and gave Papyrus a truly evil grin before walking toward the door. You were about to ask him where he was going when the doorbell rang. He let Grillby in with a casual greeting, but something about him seemed more alert than he had been a second ago.

Grillby nodded a greeting. As he stepped inside, Papyrus' arm around you constricted almost too tightly. You shimmied just enough to let him know to loosen his grip. He did, but he grunted as he did so.

"sugar, this is grillby." Sans smiled at you and waved at Grillby in a way that made it look like he was on display. "grillby, this is y/n, boss' girl."

Grillby was not what you had expected. You really weren't sure what you had expected, but something about the idea of him being a fire monster made you think he'd be yellow or red or something.

He was purple. He was also tall; almost as tall as Papyrus. The way his flames danced on top of his head made him look like he might even be taller. His whole being exuded a laid-back, almost arrogant aura. He was dressed in black slacks with a silky black button-up and a bomber jacket—black, of course.

"Hey, sweetheart." He grinned at you, and you couldn't help but stare. His eyes and mouth were white against the purple flames of his face. He held out a hand, but you weren't sure if you wanted to risk getting burned. Instead of deciding, you studied his hand. Iridescent purple flames danced on his skin but didn't seem to be hot enough to melt the silver watch on his wrist or any of the thick rings he had on his fingers.

Papyrus growled before you could reach out, and Grillby dropped his hand.

"Testy son of a bitch. Good ta know you still think I'm gonna cook 'er." He looked at you then. "I wouldn't, by the way. I know better."

You tried to smile convincingly, but you weren't sure how well it worked. "I'm not scared."

Papyrus huffed. "OF COURSE YOU'RE NOT." He sounded exasperated.

You sighed and looked up at him. "Why would I be scared, Papyrus? Give me one good reason, because so far he's done nothing for me to be scared of."

"Ooh, I like you. Tell 'im, sweetheart; I ain't gonna hurt his precious bitch."

"SHE'S NOT A BITCH."

You smirked. "I can be. Don't push me, and I'll keep being sweet for you." You stood on your toes to kiss his jaw.

Papyrus sighed just as Undyne and Alphys came in.

"Now that everyone's here, can we get going?" Undyne asked. "It really isn't fair to keep me cooped up with Al looking as hot as she does and not let me fuck her."

Grillby smirked. "You mean you weren't fingering 'er on the couch?"

Alphys coughed and turned an enchanting shade of orange. "O-of course she w-wasn't!"

"I wanted to, babe." Undyne glanced down at Alphys with a juicy look on her face. "I still could, I bet."

"NOBODY'S FINGERING ANYONE ON MY COUCH. LET'S GO."

You decided not to mention the time he'd fingered you on his couch. You blushed at the memory and glanced up when Grillby chuckled. He was watching you, and something about his grin told you he knew exactly what you'd been thinking.

The six of you piled into Grillby's dark purple SUV, and you had to wonder if he'd chosen this color because of his own fire or if it just so happened that the car he could afford was purple. You didn't ask, and instead shifted as close to Papyrus as you could after you were both buckled in.

The club was close. Sans had told you that Grillby's cousin worked for the manager and could get a discount for everyone, which was cool. Once parked, you all piled out and headed toward the building.

Muted thumping of music and hints of flashing lights made your heart pound with anticipation as you showed your ID and got a stamp on your hand. None of the monsters had to show their ID's, but you supposed that might have been because the bouncer was a monster and would know who they were already.

Your group found a table to call your home base, then you dragged Papyrus out onto the dance floor. You weren't sure what song was playing, but it had a good beat. Papyrus was stiff for a moment, making you feel a little awkward as you danced.

"Come on, baby. Just let yourself have fun." You had to shout to be heard over the music.

He pulled you close to him with his hands on your hips and finally began to let himself move to beat. You couldn't help but wiggle yourself against him, turning in his arms to press your ass against the front of his pants. He bent and kissed your throat, his hands sliding forward to your lower stomach and pulling you back harder against him. You lifted your arms and wrapped them around his neck, shimmying your shoulders and turning your head to kiss his cheekbone.

You noticed Alphys and Undyne dancing close to you and Papyrus. Alphys was in a position similar to you, and her tail curled upward between Undyne's legs. Undyne was practically humping Alphys' back, and you had to wonder if that was what you and Papyrus looked like.

You decided you didn't care. You were having fun, and you could already tell that you and Papyrus were going to have some explosive sex when you got home later.

You glanced around again and spotted Sans and Grillby dancing. They weren't dancing together as a couple, but something in the way Sans was watching the flame monster told you he wanted to be.

Sans was an unexpectedly good dancer. His style had a hip-hop flavor that meshed well with whatever Grillby was doing with his feet. His moves reminded you of the music videos you'd seen of LMFAO's songs. Undyne made a sort of scream of appreciation before kissing Alphys and going over to dance with Grillby. Their moves didn't synchronize, but they still managed to flow together like they'd rehearsed it before.

A few songs later, people all around you had made space to watch Grillby and Undyne dance. You and Papyrus were among them, although you still bounced against him in time to the beat. The two dancers seemed to thrive on the attention, getting more animated as they went. Grillby had done a few backflips that had you utterly impressed. Not to be outdone, Undyne pulled off a perfect split and smoothly slid back up to standing. You both envied her ability to dance with the heels she was wearing and cringed in pain at just the idea of her making one wrong move and breaking her leg. She never made a wrong move.

The way Sans watched Grillby reminded you of when you'd just started crushing on Papyrus. He was so cute!

Grillby bowed when he'd finished his dance. His grin was positively huge as he accepted applause, and he winked at you when he saw you were clapping too. He still had a dance in his step as he shuffled his way over to the bar to order some drinks. Sans followed him like a lost puppy. Undyne went back to Alphys, and they disappeared somewhere together.

"I think your brother is smitten," you said as you turned to Papyrus.

He was scowling. "UNFORTUNATELY SO. AT LEAST HE REFUSES TO ADMIT IT."

You knew without a doubt that wasn't going to last for very long. You pulled Papyrus to the bar with you and begged him to have a few drinks with you. He was easy to convince, but you could see him eyeing Sans.

Sans had promised he wouldn't touch any alcohol there. You felt bad for him as he looked longingly at the glass in front of Grillby. A tiny part of you was worried that the fire monster would offer some to Sans, but your fears were unfounded. As Sans reached for the glass, Grillby grabbed it away from him and shook his head.

"You know better than that, sweetheart. Even if you didn't have a problem with it, you're our designated driver. No booze for you."

"gotta say i miss the taste. you even got my favorite."

Grillby's grin was diabolical. He was planning something. He downed his drink—you only had time process a brief curiosity about how flames and alcohol could possibly mix well—and turned to Sans. Without any warning, he gripped the front of Sans' shirt and pulled him in for a hard kiss.

Sans went rigid. You felt Papyrus stiffen next to you as well. You put a hand on his arm to hopefully keep him next to you. Just as he started to get up, Grillby pulled back and smacked his lips together.

"Hmm. You taste like mustard. Not sure that surprises me."

Sans blinked a few times before he spoke. "dude…what. the fuck. was that?"

Grillby chuckled. "You said you missed the taste, so I thought I'd let you live vicariously. You didn't get a good enough taste? I can do it again."

You couldn't help but smile. Whoever Grillby used to be, there was no doubt in your mind that he was good for Sans now.

Sans' face was glowing bright red. "i, uh…yeah…i mean no…i mean, i got a good taste."

"You don't sound so sure."

"KISS HIM AGAIN ONLY IF YOU WANT TO LOSE YOUR FUCKING LIPS." Papyrus finally piped up.

Grillby turned to frown at him. "Party pooper. You sure you wanna threaten me with your girl right there? Ain'tcha scared you'll scare her away?"

You sighed and frowned at him. "No, he's not, because he knows he can't scare me away. Don't be an asshole."

He laughed again. "I don't make promises I can't keep, sweetheart." He winked at you again before holding up a hand to get the bartender's attention. After downing his second drink, he stood and bounced his way back to the dance floor.

You looked over at Sans, a smile spreading your lips as he obviously stared at Grillby's ass.

"Well," you started, scooting over a barstool to be closer to Sans. "I think I have to say that Grillby is not what I expected but in the very best way. You sure you don't have a thing for that?"

Sans' crimson eye lights seemed to shiver for a second before focusing on your face. "yeah, i need to kiss him again."

You put an arm around his shoulders and leaned in to kiss the side of his head. You then whispered where you thought his ear might be. "Don't worry about your brother; I'll keep him out of your business for tonight. You deserve to have fun with this."

He nodded. "thanks, sugar."

You both looked over to see Grillby had started dancing with a rabbit monster dressed almost as scantily as you were. You made a face and gently nudged Sans' shoulder. "Go get your man."

Sans swallowed thickly before he took a deep breath and nodded. He made his way over to Grillby and you watched with a satisfied smile as he hip-bumped the rabbit out of the way. She stumbled but didn't fall. Grillby laughed and turned his back to her, giving Sans all of his attention. The rabbit frowned and visibly huffed before moving on.

A/N: Grillby and Undyne apparently love the Melbourne Shuffle. I wasn't sure how many of my readers would know what that was, but I'm at least mostly confident y'all have seen one or more of LMFAO's music videos.