Hi everyone. Due to a large amount of request over several months, I have decided to reboot this story from scratch. I'll be following the story line of the previous Strongest Love, however rewritten with more detail. This story will turn sexual in later chapters, but for now, an introduction.

Kink warnings:

None so far, except for mild incestual thoughts.

The warm, summer's sun hangs in the sky over the sleep town of Gravity Falls. All around, the citizens go about their business, shopping and meeting with friends, all ignoring the insanity of the Oddpocolypse, or as others call it, Weirdmageddon that occurred only six years earlier. It was a Saturday so, when the bus travelling from California arrives at the stop in the middle of the woods, there were no other cars on the road to interrupt the serene chips of birds in the tree tops and the soft wind wafting in from the east.

As the doors to the bus open, two young teenagers, Dipper and Mabel Pines, smile widely as they greet the familiar sight of the old bus stop, and the path leading down the road towards their usual summer retreat. After their first visit to Gravity Falls years ago, the two Pine's twins had an amazing adventure, saving the world multiple times from threats no one at home would ever believe. But even after dealing with the horror that was Bill Cipher, it still didn't prepare them for the experience of high school. With puberty kicking in and the worry of fitting in weighing on them, balanced with studying for their classes, the Pine's twins were always there for each other, counting on each other for the support they needed most.

However, last year, Dipper announced his early acceptance into the University of California, much to the delight of his parents. After a night of celebration, orchestrated by Mabel, and a sorrowful goodbye, Dipper left his sister to study the weird anomalies his mentor Stanford Pines gave him interest in. During his absence, Mabel was left alone at home to stew on her thoughts. Senior year of high school wasn't as difficult as she thought it would be, luckily so because of her popularity among the other teens, but she still missed her brother dearly. Of course she went to visit him, and every time was a thrill; getting the mystery twins back together again, to laugh together and watch movies, staying up late and talking the night away. But as always, Mabel had to leave again, and so her loneliness returned.

The girl tried hard to rekindle her desire to find the perfect boyfriend all through high school, but even as summer approached, she still had no luck. Her thoughts kept returning to Dipper, remembering the good times they shared, and fearing that they were over for good. But the longer she festered on these emotions, the more they affected her. Mabel's sadness over missing her brother started to turn to frustration, and then longing. She not only wanted to spend time with him simply because they were siblings; she loved him. And she was beginning to think that she loved him... in a different way. Soon, she too graduated and summer arrived, another vacation to share together in their continually chosen location, Gravity Falls.

Mabel squeezes Dipper's hand, held firmly in her own, the eighteen year old boy turning his head and smiling at his sister affectionately, his plain suitcase held tightly in the other hand. Mabel was on top of the world, deliriously happy at the chance to once again form summer memories to add to her scrapbook. She had even kept up with her knitting over the years, and had fashioned a custom sweater for this summer, a collage of Dipper's face and her own on top of a sun, the words "Mystery Twin's Summer" sprawled messily underneath. Dipper had commented on her choice of wardrobe before they left, calling it embarrassing, but Mabel had none of it. She simply leaped out and hugged Dipper tightly in their bedroom, much to his surprise. She had seemed a lot more clingy than when he last saw her.

But never the less, here they were, once again ready to embark on their newest adventure. Dipper takes the first step, dropping himself off the bus, letting go of Mabel's hand for a moment to lower his suitcase before turning to her again, lifting his hand to her. Mabel took it and hopped off too, her long brown hair swishing around her blossoming body as she leaps higher than she needed to and lands with a thud, her own suitcase landing with her. With a small giggle, Mabel spins around and waves to the bus driver.

"Thanks Mr. Bus man!" she calls in a chirpy voice, causing the driver to tip his hat and close the door on his final customers of the day.

"Aw man, it's so great to finally be back!" Dipper says, turning his back to Mabel and casting his gaze across the forest. As the bus pulls away from the curb and speeds down the road, Mabel stands silently behind Dipper with her hands behind her back for a moment, her face curling up into a sinister smirk, letting Dipper relish the memories. Finally, she can hold herself in no longer, and she explodes into a giggly pounce, leaping onto Dipper's back and wrapping her arms around his neck.

"Ahhh!" she squeals delightedly, "This is so exciting! We're back in Gravity Falls! Together! You and me, after so long! We need a party to celebrate!"

"Woah woah, calm down." Dipper says nonchalantly, tugging at his sister's arms to let go of him, calmly leaning back to help her down again, "I'm excited too, but don't go using up all your energy before we see Grunkle Stan again."

Mabel lands behind Dipper before rushing around to his side, taking his hand in hers again with a sly giggle.

"Sorry, I just missed you so much over senior year." Mabel says solemnly, staring Dipper in his eyes.

"Ah, but your aim is getting better!" Dipper says with a stupid smirk, making a call back to the joke their great uncle used to tell them every time they visited, causing Mabel to groan exaggeratedly.

"Guuuh, really Dipper?" she asks with a snorty laugh, "Come on, funny man, let's get to the Mystery Shack already. I wanna see how much it's changed."

"Does it ever change?" Dipper asks, picking up his suitcase again and starting down the path, Mabel still stuck to his side.

"Well, I think Soos has been doing a really good job running the place since Grunkle Stan and Ford went on their boat trip." Mabel says, waving her bag around as she is gladly escorted by Dipper.

"I hope I get to see Ford again this summer, it's been almost three years since I last saw him, I wanna talk to him about some of my findings in college." Dipper replies, still the curious teenager he was.

Mabel's smile softens slightly at the mention of Ford, the memory of him offering for Dipper to become his apprentice during their first summer here, causing her to fall into depression and run away from the Shack, only to have him leave her for good the year earlier. Shaking her head to clear her negative thoughts, Mabel simply tilts her head cutely to rest on Dipper's shoulder as they make their way down the path, letting out a sigh of contentment.

"Well, either way we should be able to spend lots of quality time together..." Mabel says in an almost flirty way. Realizing her tone, Mabel whips her head up off her brother's shoulder, leaving Dipper to glance at her strangely, wondering what exactly they meant. He chose not to question it, he knew how hard it must've been on Mabel during his time away at college. While he had an amazing time and had learned so much and met so many new friends, his thoughts fell back to her sometimes too. He was not the only one looking forward to this summer.

After a few minutes of walking and idle chat, the two arrive at the rundown tourist trap in the woods, the Mystery Shack. With its beaten roof and tattered sign, still missing the S which was laying on the ground, the building could easily be torn down and sold for scrap, but Soos had surely made it his own, moving into the Shack to live with his new fiancé Melody. Walking up to the old porch on the front wall, stepping over an old hose, Dipper drops his suitcase down next to the soda machine and knocks on the withered pine wood door. Mable comes up behind him, holding her hands together in front of her legs, excitement brewing.

The door slowly opens and out steps the retired elderly man, Stanley Pines. With his grey hair and big ears either side his thick rimmed glasses, he was a perfect image of the eccentric uncle in woods, especially with his old Hawaii shirt loosely buttoned up. With a wide smile, the man raises his arms, shouting his greeting to his two favourite nephews.

"Dipper, Mabel! Welcome back to the Shack!" he cries joyfully, stepping forward to give the two a big hug, to which Mabel readily accepted, leaping into his embrace. Dipper too hugged his Grunkle before stepping back to pick up his bag.

"Hey Grunkle Stan, it's been quite a while." he comments, standing tall before the old man.

"Wow, look how big you two have gotten. You aren't kids anymore, I might have to start charging you rent!" he jokes, leaning down to help the twins with their bags, "Come on inside."

"Where's Soos?" Mabel asks, skipping in through the door, gazing around in wonder at the never changing interior of the Shack.

"Oh him and his girl are out for the day." Stan replies, carrying their bags to the staircase before stopping and dropping them with a huff. "Hey, can an old man get some help around here?" he then asks jokingly.

"Haha, I got you Grunkle Stan." Dipper says, retaking the bags and carrying them up the stairs.

As Mabel watches Dipper go up, staring dreamy eyed at the boy, Stan turns to her, clapping his hands together to shake off the dirt.

"So, how was your senior year? And I hear Dipper went to college, eh?" he asks, not taking notice of Mabel's stare as he readjusts his clothes.

"Yeah... my year was good, but I just missed Dipper a whole lot." Mabel replies, tilting her head again as she lets out a soft sigh, "So we gotta make this summer count."

"Heh, well just make sure there's no more of your little adventures out in the woods. Ford still has the Journals with him, so that should keep your brother from getting curious." Grunkle Stan replies, stepping around Mabel to make his way into the living room, "How about you go get yourselves unpacked and then come back down to watch a movie. Good way to unwind after that long bus ride."

"Hehe, yeah, sure thing. Thanks Grunkle Stan." Mabel says with a giggle, waving to her uncle before running up the stairs, her legs kicking up girlishly as she prances up to their old attic bedroom.

Stepping through the door and spotting Dipper leaning over his bed, opening his suitcase, Mabel was instantly brought back to their previous visits, the young boy meticulously removing all his perfectly packed clothes and items, fiddling with his bug spray and summer reading book. Almost nothing has changed, except for the fact that Dipper is much taller now than he used to be, and that he has finally managed to grow a little stubble on his chin, facial hair always being a right of manhood the boy so craved to receive.

Slowly strutting over to her own bed, and her suitcase resting on top, Mabel sits down, facing Dipper, and opens her bag.

"This room always brings back so many memories..." Mabel says, lifting out sweater after sweater as she gazes up at the poster plastered ceiling.

"Yeah, I know what you mean." Dipper replies, looking out towards the triangular window as he holds a can of deodorant in his hand, "I'm just glad that we don't have to worry about Bill anymore." he finishes with a smirk, turning to Mabel.

"Blech, Bill." the girl retorts, flicking her tongue out in disgust at the thought, "I can never look at the dollar bill the same way again."

"Heh heh," Dipper chuckles, dropping his can down on the nightstand, "Alright dumb dumb."

Mabel too giggles, blushing softly at the name Dipper used to call her from their youth. Somehow, it seemed that this place, Gravity Falls, always gravitated them towards their past, a place that always stirred up old memories. But Mabel wasn't here for that, she was determined to make new ones. Even with Dipper in the same room as her, Mabel still felt her familiar longing. She wasn't sure what exactly it was, since they were so close together again, but she wanted more. She needed to have some fun with him again.

"Hey, Stan said we can watch a movie downstairs, that sounds like fun, right?!" Mabel says excitedly, her face smiling wide as her legs kick back and forth off the edge of the bed.

"Uh, yeah. Sure." Dipper agrees, happily but still less overly enthusiastic as his sister. She did seem a lot more... excited than usual. He just assumed it was because of them finally being back together after a whole year, but she surely should have calmed down by now after the long bus ride.

Mabel throws herself forwards unceremoniously, bending her legs to land low to the ground before springing up again, practically exploding in glee.

"Race you down there!" she shouts before bolting back out of the room, leaving her suitcase on the bed. Dipper stares at the door as Mabel dashes through it, the creaking of the old staircase under her bounds down the steps echoing in the dimly lit attic. The boy's brow furrows and his lips slant in thought. Something was definitely different this visit. Had Mabel developed another 'boy-crazy' crush? If so, surely she would have told him by now. But with his sister waiting for him downstairs to watch a movie together, something he always enjoyed doing anyway, Dipper leaves his bag to follow Mabel. A quiet night in to watch a nice movie, that should be enough to calm her down.

However, Dipper still felt a tinge of worry in his chest from the notion.

Just a movie.

Somehow, he didn't think it would be that easy.