A/N: So I'm given to understand the GF fandom is quite volatile about this. Given that, I've chosen to be diplomatic about this. Ordinarily, I feel no compunction whatever to defend my actions and choices to those I haven't met, but there we go.

I don't support incest, I don't practice it, I don't like it, its an unhealthy and risky practice.

In the real world. This isn't the real world. It's fiction. It's made up. These aren't real people. So yes, this does contain ''Pinecest". But even then, there are limits to it. I'm not going to be writing romantic stuff about kids, fiction or not I draw the line there. Anything overtly mature will be kept with legal-aged versions of the characters. 16 or above. On top of this, I've rated it M. If you think its too much for you, stick to your age bracket.

If you *still* can't deal with made up people doing made up things, by all means, read no further than this note.

Now that all that moaning is out of the way, hopefully it won't have to be done again. Anybody still reading, enjoy.

...

Dipper tried to focus on his book again. There were several forces at work in thwarting his goal however. One, his TV was on, blaring an episode of Firefly; two, he had one eye on the door of his room half the time and three, Mabel.

He tried to adjust his legs again, this time without-

"Stop fidgeting, will you?"

"You're giving me a dead leg."

She shifted a bit on his lap, leaning back into him. He nestled his chin on top of her head again, trying to pick up where he left off.

"I think we're getting a bit big for this." He murmured into her hair, he felt her shiver.

"Big?" He felt her stiffen. "Are you saying I'm getting fat?"

"I…wait…what? No!" He blustered as she turned her head to glare at him.

She narrowed her eyes, poking him several times in the chest as if she was going to make a threat, before giving up and leaning back against him, mollified.

Dipper sighed, giving up on ever getting back into his book. He set it aside, settling for wrapping his arms around his twin instead.

He missed when they could just…be like this, as kids. Everything was so much easier back then. Even the weird stuff, back in Gravity Falls. Sure it was hard at the time, but he'd have given anything to go back and do it again now.

"Are you brooding again, Dip?"

"No."

"You're brooding again."

"Not."

"I can feel you brooding again, Dippingsauce." She turned from his TV to face him again, smiling softly as she fell back on her old nickname for him. He managed a smile back.

"Am not." He objected, jokingly now.

He fumbled to find her hands, fiddling with the frayed cuffs of the brightly coloured long sweater she was currently wearing.

Some things never changed.

She squeezed his hands softly, letting out a comforted sigh as she snuggled back further into him.

"So, what is up then? Is it graduation?"

He didn't reply, but for all that he might as well have written his thoughts on paper in fluorescent ink, handed it to a pilot and paid for it to be written in the sky for all the world to see.

Mabel could read him like that.

"Guess so."

"And what comes after?"

"Guess so."

"Scares me too, bro." She murmured, after a pause.

Dipper let go of her hands, moving them to grip her shoulders. He leaned forward, kissing the top of her head softly.

"Don't say that, nothing scares you Mabes."

"We both know that's not true." She replied, softly, placing one of her hands over his.

He leaned back, letting out a small groan.

"Sorry I brought it up now."

Mabel let go of his hand and turned so she was sat sideways on his lap, looking him square in the face.

"We'll be cool." She flashed a smile. It was one of her huge, infectious ones and soon he found himself smiling back despite himself.

They glanced at the TV just in time to see Mal boot Niska's henchman into Serenity's engine.

"Why the fuck did this get cancelled." Dipper muttered. Mabel giggled in response.

He barely flinched at the sound of a glass smashing downstairs. Mabel glanced at the door so briefly he almost didn't notice.

"Well, mom's already well on her way."

"Mmm-hmm." He felt her nod, suddenly quiet.

He winced. Dipper was long used to their mother's habits. Her failings, her problems, her general lack of motherly…qualities, anything. It had always been a sore spot for his sister though. He still found it odd how their roles reversed once they weren't at home. As soon as they were out the door she was back to normal. Noisy, boisterous, energetic, excitable…all smiles and jokes.

Not now though.

He rubbed her shoulders gently, in a vague attempt at comfort.

"I'm-"

The sound of a cupboard slamming shut followed by another glass shattering echoed up the stairs.

"…-fine." She finished.

He raised a hand to her cheek and turned her face to his, slowly. Her eyes flickered sadly, the only clue as to the hurt she was probably feeling inside.

Six years ago, everything was so easy, so simple, so uncomplicated.

They pressed their lips together in a tender kiss.

Or at least, it had seemed that way at the time.

They broke the kiss, sitting together in an easy silence while Firefly played on in the background.

Mabel started humming after a little while. He listened, trying to pick up the tune only to let out an involuntary snort when he did.

"Let Her Go? Are you trying to tell me something?"

"Only know you've been high when you're feeling low
Only hate the road when you're missin' home
Only know you love her when you let her go." Dipper smiled as she sang, softly.

"Alright then, that's enough of that." He lifted his sister from his lap, ignoring her squeak of protest then got to his feet, trying to ignore the pins and needles in his legs. "Let's do something fun."

"Like?" She crossed her arms, mock frowning at being manhandled.

He shrugged, looking about his room. His eyes fell on a plastic mock guitar adorned with a series of colourful buttons.

"Guitar Hero?"

…

Fifteen minutes later

"I'm gonna kick your ass, Dipweed. Why'd you ever get this game again?"

He glanced at his sister, glad to see she was back to her old self. She was never happier than when she was literally or figuratively beating him into the dirt at something.

"Beats me, sis." He grinned, playing along. "Besides, you can actually play guitar. Unfair home advantage." He winced as he missed about seven notes.

"Nothing doing, Dipster. You just have the hand-eye-coordination of a dead goat." She laughed as she hit yet another Star Power bonus. "Until we dance into the fire, that fatal kiss is all we neee-eeed!"

"Dance into the fire, to fatal sounds of broken dreams!" He sang back, followed by another series of jarring squeaks and scrapes as he missed notes. Mabel laughed again.

"Would you two quiet the hell down up there!" Their mom's voice screeched from downstairs.

They glanced at the door, then at each other. When he noticed Mabel was still playing and hadn't missed a note, he tried and failed to stifle the grin on his lips. His sister grinned back.

"Dance into the fiiii-iiiire…"
"Dance into the fiiii-iiiire…" They sang, together.