For the past two months Dipper and Mabel Pines had been living back with their parents, Alex and Ariel Pines. The two 21 year old's had been kicked out of their rented flat due to massive repairs going on in the building. It had been a slightly longer commute to university for Dipper but the two had loved being back in their childhood home. Mabel had graduated from the university Dipper was still attending and worked from home most days. Sewing clothes and costumes she made online. The only downside of being back with their folks was that they couldn't tease and kiss on a daily basis anymore. They had contented themselves with being wrapped up on the couch together. Sharing constant physical contact. Their feet moving in slow teases under the dining table, turning to kicks to throw off their parents. The world just thought they were really cuddly twins.
What they had was different. Siblings weren't meant to get along this well. At least that's what everyone said. And they were dead on. The two twins had had their first real, passionate kiss when they were 15. They'd waited to get physical though. Neither had wanted to tarnish the other with incest. When they were 17 they'd been at a party. It had ended super early when the guys parents came home and threatened to call the cops. Their own parents had been out that night, taking the time to have a date night since the kids were out. Home alone the two had had a dance party per Mabel's request. She'd felt cheated out of a night of dancing. So they'd danced and sang all through the house till they ended up breathless, giggling and kissing on the stairs. Finally slipping away to their bedroom.
At 18 they had fought a lot. They'd been so scared the world would find out. That their parents would be disgusted and hate them. Neither wanted to hold the other back. Not just in the academic sense. You couldn't marry your twin. You couldn't raise children together. So they had decided to make their relationship open. Both needed the other to be happy, more than they wanted their own happiness. So they encouraged each other to date, to love others. They would talk to each other about their other relationships, sex with others, their crushes. Being open did limit who they dated though. The phrase 'I'm poly and I currently have two partners' tended to put several people off. They had ended up picking the same university. Dipper hadn't even allowed Mabel to discuss her choices with him. If separating was best for their education then that's what they'd do. But fate and a university with an excellent science and art community and kept them together.
Mabel loved being poly. She didn't know if she would have ever started being poly if it weren't for her secret incestuous relationship. She just loved loving. She loved having different, interesting people in her life. She loved that each of her relationships were completely different. She knew Dipper couldn't be her nesting partner, they could never live openly in America. Mabel liked to think of Dipper as her anchor partner. He was the one she lived with, had been with the longest and would always be with. He grounded her to reality. Whereas her boyfriend Wirt (who was a lot like Dipper) was total nesting material. He wanted kids way down the track and she liked him a lot. She could see herself raising kids with Wirt.
The other Pines twin wasn't as naturally poly as his sister. He still dated others, he understood why Mabel wanted him to find someone other than her. Because he felt the same way. But no one compared to Mabel. He had recently broken up with his long term boyfriend. He'd been on a couple of dates with another guy back at university, but hadn't seen him over the break. Plus his other girlfriend was currently doing an exchange program in England so other than skype calls he didn't see a lot of her.
University had broken up and their uncles were back from their world voyage. They had invited the younger twins up for the summer. The twins were ecstatic, they loved Gravity Falls, their friends and of course their fathers older brothers.
The young twins had returned to the shack in the early hours of the morning after a party. Being a bit tipsy they had forgotten the security camera in the dark shop. They hadn't done anything too scandalous. Dipper had slapped Mabel's butt, she had squealed and ran forward only to turn and beckon him suggestively. Then the two had run then up the stairs holding hands.
Stan had re-watched the tape a dozen times before he showed it to Ford. The two siting in grim silence.
. _ . •➲⦉ _ ╷ꟾꟾꟾꟾꟾ _ -⌲⌲ _ ⌲✯ _ .
The four twins sat sombrely around a dining table. Everything was over. The life they had known was gone. The world would hate them now. Their parents would cry and banish them. But worst of all were the looks in Stan and Ford's eyes. Looks of sadness and regret. Dipper wanted to hold Mabel. She was shaking, her face red and puffy. He needed to be holding her, comforting her. But he couldn't. Not now. Stan and Ford would surely see it as perverse. So the twins sat, separated and afraid.
Stan had made them sit down, said they'd seen something on the security tape form a couple days ago. That they'd been watching the two of them over the last couple days.
"There's only one conclusion we can make." Ford said with a pained expression.
"We know about you two. But we want to hear your side of things." Stan said, his tone trying to comfort his beloved niece.
Dipper was shocked. That was not the reaction he had feared for all these years. They had.. A chance to prove themselves. To explain their side. Maybe then, maybe Stan and Ford would let them be. Maybe they wouldn't tell their parents or try and separate them.
So Dipper began the tale of their sweet love story. About the issues they'd had after weirdmageddon. The nightmares, panic attacks, loss of focus, Mabel's fear of bubbles, Dipper's flashbacks of being in alternate realities. And of course how they couldn't talk to their parents, school friends or teachers about it. How they soothed and grounded each other through their breakdowns. Been the only ear for miles that the other could talk to.
Under the table Dipper's hand leant against Mabel leg in assurance. Her body slowly relaxing at the contact.
The uncles nodded in recollection when Dipper talked out their first romances. How he and Mabel had started dating people from school. Long term relationships that had both ended for the same reasons. Dipper's girlfriend had called the twins 'unhealthily co-dependant'. Their partners had wanted something more.
The break ups had been taken too well. Mabel had been dramatic sure, but neither twin had experienced those brutal break up emotions. Even though they hadn't understood why at the time.
Finally Mabel broke through Dipper's storytelling "we weren't each other's firsts. Dipper wasn't even my second. We might have been co-dependant back then but we're not now. We're not together cause we were lonely or traumatised!"
"That's not what I was saying!" Dipper defended aghast at Mabel's interpretation.
"Well it's how it sounds!" Mabel sobbed, burying her head in her hands with a silent heave.
Instantly Dipper was standing next to her, hugging her. Then he had stiffened, his eyes turned to Ford in fear. But his uncles just watched with understanding looks so he relaxed and continued.
"I realised it first. I tried so hard to squash my feelings. I tried so hard. I had dismissed dreams of her but then she started popping into my head when I'd um.." Dipper stopped turning bright red.
"When-he'd-wank." Mabel mumbled through her hands for him.
"Um yes. Erm and I started.. I knew it was wrong.. I hated myself for it.. So whenever.." Dipper face was strained. He couldn't find the words. He'd never told this story before.
Mabel raised her head. Looking into his eyes. He was trying to bore into the floor with his gaze. "Dipper started hurting himself when he'd think of me. He didn't scar himself that much, he kept it hidden. But then he snagged my antibiotics. The wound on his hip had gotten infected. I ransacked our room when he was out. Thought I'd lost them in the bomb site that was my half of the room. I was in the closet when his parker fell of the coat hanger and rattled. I was furious. He wouldn't tell me why he needed them. Why he hadn't just asked for them. Why he wouldn't go to the doctor. He begged me to just go to the next appointment he'd made me to get more. I had a UTI, so I um, really needed them. Finally I overpowered him. He had this massive crosshatch of scars covered in band-aids under his boxers. He told me.. He said he deserved it. I didn't understand. I was on top of him, pinning him down. He was a mess. Just begging and pleading.. Finally he told me why he 'deserved' it. That he wanted me. That he was jealous of my boyfriend. That he was sick and despised himself." Mabel gushed out, her mind vivid with the memory. She gripped Dipper's hand tightly. Knowing he wanted to run away. Knowing she couldn't explain everything without him here with her. "I was shocked.. But it clicked. I understood."
A nervous laugh escaped Dipper. Looking at her with bright eyes as he whispered "you.. She said, 'then I guess I deserve it too'."
"Heh yeah." Mabel said with a smile. The two were lost in each other's eyes.
Stan wanted to hug the kids so badly. But he restrained, clearing his throat instead.
Puffy brown eyes snapped up, finding Ford's face stoic and unreadable. Dipper would have preferred anything to that. He could understand rage or disgust. They probably deserved it. Seeing that calculating look instead, it broke his heart.
"Please don't hate us. We try not to love each other. We date other people.. I want Dipper to find someone he can marry. Have kids with. He wants the same for me. We're open. We love others and talk to each other about our other relationships. We're poly. We both need each other, but we also need each other to be looking for something better. Something the world could accept. We want each other to be happy more than we care about ourselves. If Dipper wanted to break up, I'd let him go." Mabel finished, her hand squeezing Dipper's. "And if we don't.." She chuckled, "then we'll move to Australia. Dipper will bleach his hair and go by Tyrone Hirsch. And I'll be Matilda McGowen!" She said with a fist bump to herself.
Dipper smiled at her undying enthusiasm. "But we're careful. Mabes isn't going to end up pregnant." Dipper reasoned, searching for any sign of emotion from his mentor.
"Oh yeah I'm on the pill and I've got the implant thing in my arm.." Mabel looked down, unable to say out loud how much she'd love Dipper's baby. How the world would just assume it looked like her.
Stan blushed slightly, looking at Ford in silent confirmation.
Ford nodded and cleared his throat "Ah.. Well, I don't get the open relationship stuff, but the reasoning sounds, mature.."
Stan scoffed "really? Mature? How are you two ok with the other seein' others? Don't you get jealous?" He asked bewildered, and maybe a little hurt.
"I guess I did at first.. But it's different. We've always loved each other. And others. And now we do that with romantic love as well." Dipper struggled slightly to explain it.
Ford nodded and exhaled loudly. "I can tell you that I don't want this life for either of you. The loving each other bit. If you do choose to continue, it will be tough. But.." He said with a smile, pulling up his hand from under the table. In his grasp was a five fingered hand. "It can be done." their hands rested atop the dining table. Ford's hesitant smile peeked out from his mask as he saw Stanley's grin.
Two jaws dropped.
"WHAT!" Dipper cried. "YOU TWO?"
"But you two fight so much!" Mabel exclaimed.
"Yes, we do bicker a lot." Ford said with the thinnest of smiles.
Silence filled the room. Dipper's head was imploding. They weren't alone. AND Stan and Ford weren't going to shout their crimes from the rooftop, they weren't even angry. Mabel's smile was growing uncomfortably wide. Seeing the two men before her, who she'd always thought were unhappy. She saw them in a new light. They weren't loveless old bachelors, but a angsty old married couple.
"Oh-my-god! Oh-my-god! AHHH! it happened on the boat didn't it! Or were you together before that? AHHHHH" Mabel slammed her palms on the table, standing up and leaning over it as far as she could reach. Getting face to face with Stanley.
"Well um, we were together before I was kicked out, many years ago.. And then yes, we rekindled on the Stan'O War II." Stan confessed rubbing the back of his head.
"Why, if your fine with us being together.. Why did you have us explain ourselves?" Dipper asked, the shock ebbing away to reveal mild hurt.
Ford sighed, "well, we wanted to make sure you too weren't just messing around or something. Unlike us, Mabel, you could get pregnant. And the two of you could have normal futures. I spent 15 years in a different dimension, and Stan sacrificed his best years to bring me back. I'm not saying we settled, but our options to have a family of our own are long gone. Yours aren't. But it seems you already grasp that."
Coughing nervously Stan rubbed a thumb over his twins hand. "You know Dip, I always thought you were gay." He admitted.
Dipper looked up, turning redder by the second "what made you think that?" He blurted in a breath. He had never introduced the family to his boyfriends. Mainly because he'd already introduced them to a girlfriend and he wasn't ready to tell his parents he was poly. The twins feared their parents wouldn't understand how they could both be poly. Like they were just copying each other or something.
A slight chortle turned into a cough. Stan shouldn't have said it. He should shut up right now. "Ah, well cause I um.. I always thought you had a crush on my man here ." He confessed with an apologetic look.
Mabel's head snapped up, her eyes twinkling. "Oh he does!" She cried.
Hands shot out to cover the girls mouth "she's joking reall-" Dipper started, his face redder than beetroot before shouting in horror. "EW MABES!" He whined pulling his defiled hand off her mouth. Wiping off her saliva on his shirt.
Pouting Mabel grinned cutely, "oh come on DipDop! It's not like this situation could get weirder! Honesty breaks tension!"
Dipper's eyebrow shot up, still clutching his hand like he'd been wounded. "Oh really?" He squeaked, looking towards Stan. "Mabel makes me roleplay as you!" He shouted out before being knocked off his feet.
A war cry followed Mabel as she tackled Dipper to the ground. Tickling and pinching without mercy. "What's done in a bedroom is private you dweeb!" She protested with horror.
The older twins shared a look as their niece and nephew yelled and kicked on the floor. Clearing his throat Ford said to Stanley, "this is.. unexpected."
Two messy brunette heads popped up from the other side of the table. Glaring daggers at each other between looking nervously at the older twins.
"Hell yes it's fucking unexpected." Stan said looking at Mabel, "how could you like me?"
Ford chuckled softly, "well she does sleep with a pig.." He teased lovingly.
To which the three other Pines' all yelled "HEY!"
Stan crossed his arms and stated tersely, "oh yeah? Well now you're not sleeping with anyone!"
Dipper blushed at the cutest pout he had ever seen cross Ford's face. Whilst Mabel laughed at Stan's burn.
Fingers rubbed a birthmarked forehead as Dipper spoke. "I can't believe you guys are together.. I mean this is just so unlikely!"
Ford nodded, his expression calculating, "hmm yes statistically.."
Groaning at his brothers comment Stan turned back to a still beaming Mabel. "I still can't believe you like me!" he empathised.
Ford looked to his side, resting six fingers on his shoulder. "Babe what's not to like?"
"But we're so old!" Stan exclaimed. This wasn't about his weight, or thinning hair, or past misdeeds.
"Your only 47!" Dipper defended a little too quickly.
But it didn't seem reasonable to Stan. "That's nine years older than your dad!" He exclaimed.
Ford soothing voice stated, "come on now Lee. I'm sure they are both long over their crushes. Don't embarrass them further."
A chortle spluttered from Mabel "HA! That's a nice thought!" She said whilst her brother buried his head in his hands.
Looking at his blushing nephew Ford's voice broke as he said, "wait, what?"
Unembarrassed Mabel reasoned out her feelings. "Well.. We both have the hots your you guys pretty bad.. I mean we love each other! but.. I don't know. You both make us feel so safe.. Your our dinosaur punching heroes. Your everything we want to be. Everything we love about each other. And now that we know you love each other.. Well that means you two probably understand us more than we understand ourselves. And thinking of you two together.. That's gonna give this guy," she elbowed Dipper beside her. "The greatest dreams he's ever had!"
"AH MABEL!" Dipper yelped as he tackled her to the ground and sat on her. "One more word and I'll do it Mabes!"
"Noo!" Mabel cried, "not the face fart!"
Laughing Stan reassured the young twins. "Don't worry Dipper.. The feelings are all mutual."
A squeak high enough it could have signalled bats came out of Dipper. "Wait what?! You guys like us too? Aren't you gay? And why would you like us? We're so.. Do you.." Dipper's voice got somehow higher and faster as he rambled.
"Easy Dip, breathe now.." Ford said calmingly. "No neither of us are gay. Stan likes everyone and I.. Its more the soul I'm attracted to."
"I take it your bi too then?" Stan asked Dipper, who was still sitting on Mabel.
"Um yea." Dipper affirmed.
The group sat in silence till Mabel couldn't resist. "So you guys aren't open like us.." She caught a warning look from Dipper but continued with a shit eating grin. "But if you like us, and we like you.."
Ford stood abruptly, his face flashing with something too quick to catch. "Absolutely not! I know that we've all clearly crossed the incest line but, well we're your uncles! We changed your fathers nappies! It's not like we're even once removed! I mean maybe if we were your great uncles.." Ford rambled as he unconsciously backed away.
Mabel huffed, pushing Dipper off her and helping him up. "Ford that's ridiculous! We're all twincesting already-"
Stan cut her off with sudden laughter, "twincest? HA I love it!" He nudged Ford cutely, "hear that IQ! We have a label!"
"Yeah so compared to DipDop here your practically my distant relation!" She reasoned, not seeing the problem.
Ford coughed, but he had to put his foot down. "Look honey its fine to talk about our um, sexual identities. But anything beyond that.. It really would be very wrong for anything else to happen here." He stood behind his chair. Truth was he'd had the stirrings of an erection ever since the beginning when the two young twins had been holding hands, at the dusty blush that was creeping over Dipper's neck. Brilliant insightful Dipper. Memories of that blush appearing before had filled his mind. Back when they'd collaborated on projects.. Had Dipper been thinking about him all those years? Getting nervous and flustered because of him? No. He'd been a monster all these years. His dreams of Dipper underneath him were wrong. He'd been taking advantage of a child in his head. He was a terrible human being.. And yet there they were, the two most gorgeous faces, starring at him with love and hope and want.
Mabel was not satisfied. How could they look between her and Dipper and say it was alright for her to love him, but wrong to love them? "You can't hide behind the morally wrong card. If you don't want be with us that's fine, but do it because it's what you want to do. Not because it's what you think you should do."
Stan coughed nervously. "Fords right sweetie. It, it would be wrong. Your not.. Your young! We would be taking advantage."
Finally Dipper spoke up. His voice clear and reasonable. "No." He looked at a clearly uncomfortable Ford. "We love each other. We've been dealing with this for years. Wondering if it's wrong to simply love. It's made us more mature than most our age. Not to mention the things we've seen and done here in the Falls. Ford, you've told me time and time again that I'm mature for my age. Either that was I lie or you really do believe that. So please don't play that card. We're not kids. Like Mabel said, if you're not comfortable with us that's fine. But we've been legal for five years. You wouldn't be taking advantage of either of us, and to say so is disrespectful to both Mabel and I."
Ford's mouth opened and closed. Unable to find the words. Why didn't Dipper see this was terribly wrong.
Brown eyes sparkled beside his brother. "I love it when you does that. You're a good kid Dipper, sorry man. Verbally backing my brother into a corner. Only way I can do it is physically." He said with a teasing wink. "But he's right. We're too old for you."
Dipper blushed, looking away from Ford's dark gaze.
The comment made Mabel laugh however. "HA! You wouldn't even be the oldest guy Dipper's been with!"
Ford's gaze grew darker.
"NOPE no! No, no MABEL! LIMITS exist for a reason!" Dipper cried aghast and embarrassed.
"They're family!" Mabel reasoned with a grin.
Two could play that game. "Oh so I can tell mum about her tennis coach?"
Mabel gasped in horror "you wouldn't!"
"Try me!" Dipper grinned as she lunged at him and the fell rolling and tickling on the floor again.
Mabel won. Sitting atop Dipper's back triumphantly. She cocked her head to the side as an idea came to her. "Oh my god guys! This is 'pinecest'. Ha! Get it cushion?" She winked at Dipper.
Ford abruptly grabbed Stan's hand. "Nope!" he cried as he pulled Stanley out of the room.
. _ •➲⦉ _ ╷ꟾꟾꟾꟾꟾ _ .
Ford sighed, leaning against their locked bedroom door.
The original mystery twins spoke in unison, "I can't believe it.."
Ford continued with, "the coincidence!"
Whilst Stan said, "we're so old! You at least have that grey fox look.."
"Oh Stan, you know how beautiful you are." Ford tried to reassure him.
"Eh, your just bias." Stan waved the compliment off. "You said yourself about the more familiar the face, the less time the brain takes to identify it. We register the speedy identification as beauty. You've just looked in the mirror too much." Stan teased.
Ford sighed. Letting go of his worries that he was a monster for wanting their young relatives. "Oh here we go again." He said with a smile, stepping towards his twin. Kissing Stan's cheeks, his chin, his neck and chest, he pulled his hands up and kissed his hairy knuckles. All whist saying "You. Are. Beautiful."
Later that night Stan rolled over in their bed and sighed "I am worried though. What if she gets pregnant?"
Ford hummed thoughtfully. "I could run some tests. See how many recessive factors they both have. It might deter them."
"I couldn't bear it if they fled to Australia. Could you imagine dipper bleach blonde! What a sight!" Stan confessed.
Ford squeezed his eyes shut in a fleeting moment of despair. "Yes. And I still think they'd look like twins."
"We could convince them this life's not so bad. Or try to push them apart." Stan offered, not sure which was better.
Ford smiled with a sigh. "I know you could never do that. Your all heart Lee."
"Shush cutie." Stan reprimanded. Snuggling up behind his twin.
A gasp of horror left Ford when he felt an erection against his back. "Really Stanley? They're so close! What if.. What if we thought of them!"
"Gods sixer, what do you think got me hard?" Stan groaned.
. _ -⌲⌲ _ ⌲✯ _ .
Two floors up two 21 year old's sat across each other. Their twin beds pushed up together. They'd never moved them before.. But they no longer had to hide here.
"Oh my god." Mabel breathed.
"I know." Dipper agreed beside her.
"Oh my god." Mabel sighed again.
Dipper groaned, lying down. "Yeah Mabes."
"No, no but Dipper. Oh my god." Mabel reasoned.
The boy face palmed.
When the attic had faded into darkness Mabel's voice broke through the edge of Dipper's sleep. "Were totally gonna seduce them right?"
Dipper sat up aghast, "Mabel!"
"What." She whined, "like you weren't thinking it."
"I was not." Dipper defended.
Mabel scoffed. "Oh pish, please pass me the quantum twisty thing my boy." She said in a deep voice.
"Nooo Mabel!" Dipper begged.
"Oh Dipper lad, you're so brilliant, I'm so proud of you!" She continued her impersonation.
Dipper pounced on top of her. "Now is not the time for impressions Mabel." He snarled, his dick already half hard in defiance.
Mabel reached up and kissed Dipper sweetly. "I love you."
Dipper collapsed, melting into her neck. "I know babe. But, if they don't want-"
"But they do!" She argued.
"Still-" Dipper reasoned, his voice breaking when hips pushed up against his.
"Remember that time with Tom? When I just watched you fuck him?" Mabel teased, rolling her hips over a stiffening cock.
Dipper smiled, "you mean when he fucked you."
"Meh semantics." Mabel dismissed. "I had a great view. But Dipper.. What if Ford-"
Dipper silenced her with a kiss. "We have to respect them. Mabel, swear you won't do anything.. Untoward."
She grinned up at her lover. A pained, restrained expression on his face. "Hmmm I don't know… I'd have to be pretty satisfied not to-"
Dipper grinds against her harshly, cutting off her words. He kissed her in the dark as he pulled a leg up. "Fuck Mabes your soaked!" He exclaimed as a hand swept over her underwear.
"Hmm?" Mabel gasped as her clit was rubbed through cotton. "Oh.. I've been thinking about Stan." She admitted with a grin.
Pushing up her other thigh, Dipper hiked up her sullied panties with them. Her knees resting familiarly on his shoulders. With a grunt he lowered his boxers before sinking in. "What was that sweetie?" He said gruffly, making his voice go rough and hoarse.
"Fuck-" Mabel gasped, her body shivering in pleasure as she was filled.
Dipper moaned as she tightened around him. She was really slick. After a few thrusts her warm and wet stickiness had completely coated his long, thin dick. Excess was starting to glaze his balls. Benefits of being young she always said.
With a particularly hard thrust Mabel moaned loudly, her bundle being pushed back and forth by Dipper's hard head.
Thoughts of his uncles filled Dipper's head. He could feel Ford's dark gaze on him from before. Mabel's hands were trailing over his chest, lightly flicking his nipples and tangling in the trail of hair above his dick. He let his mind envision they were Ford's fingers. His big, wide fingers; six tips running lovingly over his body. The young man moaned loudly in the dark.
His hand travelled under one of his baggy tees to feel Mabel's perfect little boobs whilst her teeth grazed his neck.
Determined to contribute Mabel squeezed herself. She had remarkable control over her vagina. She could suck in air and release it if she wanted. Sounded just like a fart. But when Dipper was inside her and she squeezed, well it was harder but so worth it.
He went lax above her, groaning in agonising bliss as her body tightened harshly around his swollen member. With his head buried in her neck he saw stars till she unclenched her muscles with a gasp. Dimly he was aware of little kisses on his cheek. Drawn back to reality when nails dug into his arse. Mabel was wiggling, trying to restart his movement.
Dipper kept one hand under a knee, bending it flush against her whilst he thrusted.
Mabel's hands wove around his neck, pulling him in for kisses.
Her ankles locked together behind his back. Attempting to keep him closer, drive him deeper.
When Dipper's hand squeezed between them to rub at Mabel's clit she soon convulsed around him, gasping in pleasure. Her blood turning to butter for a blissful ride.
Between her tightening walls and the gorgeous moans she was emitting Dipper came hard. Fully seated within her as his ball constricted before he shot his load out.
The two breathed in the sweaty air deeply.
Dipper bit back a cry, a horrible thought coming to him. "You don't think they heard us do you?"
"God I hope so." Mabel gasped, still catching her breath.