Dipper was still confused on why he had to be Sally.

"Because, bro-bro," Mabel had explained while doing his makeup, "you're small and delicate, and it only takes a couple yanks on your strings to make you fall apart." She'd grinned at her clever use of wordplay, and Dipper only remembered her reasoning because of the look of satisfaction she had on her face after.

Summerween had rolled around again, what a surprise. The first time they'd endured this peculiar holiday wasn't exactly enjoyable, what with the Summerween Trickster trying to murder them. The following times (both across the span of two summers) were much more exciting, and in the good way this time. Mabel and Dipper had actually gotten invited to a couple parties, which was really nice, not to mention getting to help Stan scare the living daylights out of unsuspecting children. He'd even let all of the teens (the twins, Grenda, Candy, Pacifica, Wendy, and the rest of her crew) set up a haunted house inside the Mystery Shack! It was a little surprising that most of the parents hadn't walked in there and chewed them out, considering that they were most definitely going to be the cause of a fortune in therapy bills. Yes, it was that scary.

But this year was going to be a little different; not because there was some new monster chasing them all over town, but because both Mabel and Dipper were doing couples costumes with their respective partners!

Mabel and Pacifica (they'd gotten together over a facetime call a couple weeks before the Pines twins had been set to come back up) were dressing up as Asami and Korra from "The Legend of Korra," meanwhile Dipper and Bill (I don't need to go into the history of their romance, it just sort of happened) were doing Sally and Jack from "The Nightmare Before Christmas," after winning the debate against Mabel on whether it was a Halloween or Christmas film.

Dipper had kind of assumed that Bill would call dibs on Jack Skellington, which only made sense. He was far more terrifying than the small brunette could ever imagine to be, and Sally was way less intimidating. Plus, Bill could really rock a tuxedo. Mabel had jumped at the chance to do some makeup, seeing as her and Pacifica's costumes didn't really rely on the makeup, just hairstyles and costumes.

"So..." Mabel droned as she began to work on her brother's face, "are you excited?"

"About the makeup or about Summerween?" Dipper awkwardly chuckled, earning an eye roll from his sister.

"The Summerween party, of course!" She grabbed a pallet of eyeshadow, primarily consisting of blues and greens. "Also, it's your first holiday with Bill! You've gotta be somewhat pumped for that!"

Dipper blushed, unable to keep the nervous grin off of his face. According to his twin sister, holidays were apparently a super fun and romantic time for couples, and seeing as he'd never really dated anyone before, this was pretty nice, as well as anxiety inducing. Bill had seemed all for the couples costume (and going to Robbie's party), and had made countless jokes and teased Dipper on his (actually quite fitting) character choice, and even though Dipper acted like he hated all of them, he was super happy that he had someone to do all the fun Halloween stuff with. Besides Mabel and Wendy, of course.

Mabel smirked as she began smearing dark blue eyeshadow over her brother's eyelids. "Aww, you're blushing! You are excited!"

Deciding he didn't want to listen to Mabel go on and on about what a dork he was and how cute him and his demon boyfriend were together (believe me, he already knew), Dipper quickly turned the tables. "Well, what about you? You've gotta be ecstatic about yours and Pacifica's...fling?" Yeah, that didn't come out exactly how he thought it would.

"Well, duh!" She giggled, grabbing her eyeliner to draw the stitches on Dipper's face. "Our costumes are killer! We're totally gonna win the costume contest at Robbie's party!"

"I wasn't necessarily talking about the costumes."

Mabel's face flushed the same color as her trademark sweater. "W-well, y'know...Pacifica's just great. I don't think I could imagine doing this with anybody but her this year."

For as much as she teased her brother about his enamored state whenever he was around Bill Cipher, she was just about the same whenever she was with Pacifica Northwest. The two girls had a relationship like a stereotypical "enemies-to-lovers" fanfiction; constantly teasing and reminding each other about how terribly they used to treat one another (sans Mabel, except for the golf competition from three years ago), but were also so fluffy and cuddly at the same time. Their sudden declaration of secret fascination with each other turned a few heads, and turned even more when they started publicly dating, but they didn't care. Both Mabel and Pacifica were just over the moon to finally have someone to hold that they didn't have to pay for (Pacifica) or beg on their hands and knees to finally like them back (Mabel).

"Aww!" Dipper squealed in an uncomfortably high falsetto that sounded nothing like Mabel. "You're blushing!"

She scoffed. "Oh, be quiet! Remember, I'm the one doing your makeup!"

That little reminder was enough to shut Dipper up long enough for Mabel to finish. Point for the sister.


"Alright!" She squeaked, setting down her brushes and eyeliner for the first time in twenty minutes. "It's finished! What do you think, DipDop?"

The female brunette reached over and grabbed a hand held mirror, holding it in front of her brother's face. She had no idea how he would react, but in her opinion, this was one of the best makeup looks she'd ever done! Mabel was pretty certain it topped hers and her girlfriend's, that's how spot on it was.

"Wow," Dipper mumbled, peering at his reflection in the mirror, completely in awe of his sister's handiwork. "Mabel...this is awesome! I look just like her!"

She playfully took a bow, but reminded Dipper that they weren't exactly done yet. "I still have to do your hair, y'know," she said cheerily, reaching over and grabbing some of that really tacky temporary hair coloring spray. "We're staying true to the character, so we're making it red."

Dipper gulped. He trusted Mabel with the makeup, considering it could be washed off in an instant, but with his hair? Not really.

"Well, c'mon!" She urged, gesturing to the pine tree trucker hat that still sat lopsided on her brother's head. "I can't do your hair if you don't let me see it! Unless there's something written in the journal about that..."

Heh, Dipper wished. Begrudgingly, he took ahold of his trademark cap and whisked it off of his head, allowing his unruly brown curls to fall into his face; it's been a while since he had a haircut. And if you met some of the barbers in Gravity Falls, you'd avoid getting one, too.

"Dang, you've got a lot of hair," Mabel remarked, making the tips of her brother's ears turn red. She suddenly gasped. "Could we put it in a little man-bun!?"

Dipper swatted Mabel's hands away, feeling more embarrassed than ever. He was obviously aware of the mass amounts of hair on his head, since everybody felt the need to comment on it (Bill was nice, though. He said he loved it), saying that it made him look like a little e-boy, or worse, what Mabel called "soft boys." The splash of freckles and the hard to ignore blush that coated his face wasn't really helping his game, either.

"Stop it!" He squeaked. "Can you just put the spray on it or something? I don't wanna keep Bill waiting.

Mabel sighed; Dipper never wanted to have any fun. "Fine, I'll hurry up so you can go suck face with your boyfriend."

"Mabel!"

After a lot of teasing and awkward blushing, Mabel had managed to get Dipper's hair somewhat red; closer to an auburn color than the deep crimson color of Sally's hair, but what can you do? The entire bottle was, like, 2.

But at least Dipper looked great! Mabel had hand knit him a sweater with the pattern of Sally's dress all over it, and it was baggy enough to where it sorta looked like a dress, which was really cute. He donned a pair of black, ripped denim shorts, white knee-high socks, and black combat boots, those of which he had to borrow from Mabel because all he really owned were tennis shoes and bright orange sneakers. His face was all blue and stitched up, and his hair was styled in a soft, fluffy looking way.

Bill was gonna lose. His. Mind!

"Okay," Mabel declared, placing her hands on her hips and admiring all the work she'd put into Dipper's costume, "you're all set! Now go downstairs and find ol' Dorito! I'm sure he's already ready."

Dipper chuckled, smiling wide; for once, he actually felt...was "handsome" the right word? "What makes you so sure of that?"

She deadpanned him, blinking like it was the most obvious thing in the world. "Because he can literally just snap his fingers and be in a different outfit. Have you forgotten that you're dating something close to a god?" Something worth noting, Mabel had gotten a little more sassy and sarcastic as the years went on. It made arguing (and just talking to her in general) more fun. "Now, I need to get my costume on and my hair done, so scoot!"

Mabel shooed her brother out of the room, slamming the door behind him. Dipper walked into the bathroom to do a final check of his costume, before walking downstairs to the den to find Bill.

Sure enough, the lanky demon was there, sitting in Stan's recliner like an anime supervillain, and from what Dipper could see, fully decked out in his striped tuxedo. The blonde kicked his legs up, floating up into the air, turned around and gazed at Dipper with his vibrant, glowing yellow eyes, and-

Wow. There was nothing else to say besides wow.

Bill looked stunning from head to toe. His costume was completely canonically accurate, with the black and white vertically striped suit, bat shaped bow tie, extravagantly long, curled coat tails, that (if it hadn't been for the wires inside them) would've trailed to the floor, while Bill was still suspended in the air, and a pair of skeleton gloves covered his hands. His makeup was simple; just a white face with dark, cartoonishly large circles around his eyes, and some skeletal-looking lips. He'd kept his dirty blonde hair the same, wild and wavy as always, but he'd taken the liberty of removing his little top hat.

And in the dream demon's eyes, Dipper looked gorgeous, what with the large, vibrantly colored sweater, frayed black shorts, the cute little knee-high socks, one of which had bunched up around his honey calf, and the shiny Doc Martens. Not to mention the red hair, which Bill was totally loving, and the beautiful makeup. If he hadn't already thought Dipper Pines was the cutest boy in Gravity Falls, he certainly did now.

"Well, hello there," Bill purred, floating over to the gravity bound teen, looping his arms around his neck, being extra careful not to get any of the shimmery blue makeup on his sleeves. "Don't you look lovely?"

Dipper giggled, blushing. "I could say the same about you." He smoothly replied, grasping onto Bill's bicep.

Bill smirked, tilting Dipper's face from side to side to get a good look at Mabel's craft. "I gotta hand it to that little weirdo; she's pretty good at what she does."

The brunette nodded in agreement. Their sweet, flirtatious banger continued for a few minutes while they waited for Mabel to come clonking down the stairs. But eventually, the two got tired of standing (floating, in Bill's case) around, so they relocated to the dining room, where the candy bowl was, filled to the brim with good sweets, just waiting to be devoured. Sure, it was for the kids, mostly to help them cope with the absolute terror Grunkle Stan would unleash upon them when they rung the doorbell, but who said all of it was for them?

"I just can't get over how handsome you look," Dipper mumbled to himself, unwrapping a piece of taffy and popping it in his mouth.

Bill grinned smugly, a distraction from the bright pink hue that shone underneath the makeup. He grabbed a square of chocolate from the bowl and began nibbling away at it, relishing in the cool, creamy flavor; out of all the chocolate he'd tried, milk chocolate was definitely number one on his list.

"Don't even start to complain, Pine Tree!" Bill replied, gliding in midair and freezing behind his boyfriend, gracefully suspended underneath the kitchen shelf. "I want to kiss you so bad, but Shooting Star would probably beat me into my nonexistent afterlife if I tried!"

Dipper felt his face heat up, and he looked down at his feet. "Y-yeah, she probably would."

"Unless..." Bill mused, a hint of mischief in his neon eyes and a little flirt in his grin. He shoved the candy bowl away from his boyfriend, floating out from behind him and parking his lanky body in front of him instead, merely centimeters away from practically laying on the dining table. He kicked his legs up, perching himself in an almost sultry and seductive manner. Dipper's mind had gone into full "gay panic" mode as the demon whispered in his ear. "...Mabel isn't around to see it."

Dipper let out a huge sigh of relief, resisting the urge to shove his gravity-defying boyfriend away from him. "You could've just said that," he mumbled; he was pretending to be irritated, but the pink hue on his blue stained face gave it away. "You didn't have to try and give me a heart attack."

"Oh, I know, but where's the fun in that?" Bill cackled. He took notice of the unamused expression on Dipper's face, and began to backtrack. "I'm sorry, Pine Tree," he apologized, gently bopping him on the nose with a gloved finger. "What say we just kiss and make up?" The blonde creature chuckled at his own clever wordplay; seems like Mabel and him have been spending a little more time together.

The brunette chuckled, looping his noodle arms around Bill's neck. "Well, I suppose we could do that." He smiled dopily, showing off his pearly whites.

Bill smiled back, tilting his boyfriend's chin upwards, putting his face at the perfect angle to lock lips. He leaned in, waiting for Dipper's eyes to shut before letting his own flutter closed. Dipper felt a comforting hand rest at the base of his head and another rest on his shoulder, and took that as a cue to crane his neck just a little more, putting the couple's faces just close enough to each other where they could almost inhale the other's scent. Dipper smelled like fresh pen ink and (shockingly) pine, meanwhile Bill always smelled like cocoa and copper.

The moment was perfect and romantic, but just as their lips were about to gently interlock, Bill felt a hand come up and smack him on the back of the head, causing him to jump back and fall to the ground with quite a loud thump! Dipper's eyelids flicked open, and surprise-surprise, Mabel was standing across from him, head to toe in her Korra costume, looking very displeased with the both of them.

"And what exactly do you think you two are doing?" She asked, glancing between the startled demon on the floor and her brother.

Before Dipper could answer, however, Mabel began talking again - well, it was more like scolding them. "I'm not about to have my masterpiece," she gestured to her brother's face, "ruined, simply because you lovebirds can resist swapping spit, okay? At least not until after I get tons of pictures of the makeup."

"Oh, come on, Shooting Star," Bill groaned, shoving himself up off the floor and wrapping his lanky arms around Dipper's shoulders, resting his chin atop his fluffy, crimson curls. "It's Halloween! Let us have some fun!"

She smirked, shaking her head. "Nope, sorry!" Mabel bounded over to the front door, swinging it open and waiting for the boys to join her. "Hurry up, we've gotta go get Pacifica! Then we can start heading over to Robbie's place for the party!"

Dipper intertwined Bill's finger with his own, gently leading him over to the door. Bill still had the most comical of pouts on his painted face, and the hand that wasn't being lovingly held by his boyfriend's was balled up into an angry fist. "Are you and Pacifica gonna kiss?" He grumbled, staring daggers at Mabel's smug face.

"Well duh," she replied bluntly as the trio left the Mystery Shack. "We chose simple makeup looks. Not my fault you two decided to dress up as Tim Burton characters!"

The angry demon looked ready to fire back some witty retort, but his mortal boyfriend stopped him by yanking on his hand, bringing him down to eye level.

"Calm down," he soothed, brushing Bill's blonde bangs out of his eyes. "She's just trying to be annoying at this point, so it's not worth it. How about after we pick up Pacifica and Mabel gets her group picture at the party, we ditch and hang out at Greasy's Diner instead?" Dipper suggested. And if Bill wasn't already sold on the idea, Dipper sweetened the deal. "I heard that they're offering free pancakes to the people with the best costumes..."

Bill's scowl dissolved into an eager grin. "Those pancakes are as good as ours, Pine Tree," he whispered back, dropping a quick, small kiss on Dipper's forehead, making his face scrunch adorably. "Let's do it!"

"Awesome," Dipper mumbled, beginning to lead Bill along the dirt road again. The demon had decided to float, making things way easier for the smaller boy. "Now let's go; don't want Mabel to be suspicious."

Bill happily hovered along, holding Dipper's hand tightly. The night had just begun, but the couple already had a strong gut feeling that this was going to be the best Summerween ever. Not because of the free pancakes necessarily, but those were definitely a bonus!


A/N: Happy Halloween, everyone! I hope you've enjoyed this cute little fic, it was a lot of fun to write! 2020 Halloween is going to look a little different, but I hope you're all still having fun! It's definitely one of my favorite holidays, considering it's the only day where walking around your neighborhood in cosplay is socially acceptable (even though we can't do that this year.).

I'm gonna sign off, but I hope you like the other Halloween fics I've uploaded today! And if you'd like, let me know what you were going to/are going to be for Halloween this year! I'm dressing up as Micheal from Be More Chill!