Dipper woke up with the distinct feeling that something was not right. It was a sinking feeling, the kind you get when you know something bad is about to happen and by now, there's no way to stop it. Dipper stood up, got dressed, and trotted down the stairs. He listened to the distant chatter of voices, the wind that sometimes wracked the house, the creak of the stairs as he walked down him. It reminded him that no matter where he actually lived over the school year, this was his home. This was where he felt at home. He wiped the sweat from his face and stepped into the kitchen. Mabel, Grunkle Stan, Bill, and Grunkle Ford all sat around the kitchen table, laughing hysterically about something.

"Good morning, Dipper," Bill said, smiling at him as he walked in.

"Morning, Will." Dipper replied, yawing and rubbing his eyes. Bill walked over to him, wiggling his eyebrows, got a glass and poured some milk into it. Dipper almost giggled back, but Mabel was piercing his head with a sharp stare.

"Hey, Will, what was Dipper doing last night?" Everyone looked at her oddly, but she continued to stare daggers at Dipper. Dipper felt like his insides were melting, not telling her things like this, but he didn't really see how it would be possible without telling her that Will was actually Bill, and also because it was probably illegal, what they had done. If Bill wasn't considered a minor, it was very illegal. Bill closed his eyes a second, smiled, then opened them again.

"I dunno, why?" He asked Mabel, shrugging.

"I woke up last night, and he wasn't in bed." Her voice was tense, and her smile wasn't even there.

"I told you, Mabel. I swear I was just getting a snack." Dipper said, feeling nauseous.

"Pinkie promise?" Mabel's eyes shimmered with hope. Dipper looked to the ground for a moment before saying it. Guilt coarsed through him. He was lying under a pinkie promise, to his one and only wonderful sister. It was a crime of crimes.

"Pinkie promise." They curled their pinkies around each other, and Mabel screamed.

"This means we can have fun today!" Mabel hugged him tightly and he hugged her back, admittedly less tight. Over her back Bill looked at him, grinning and he tried to grin back. Grunkle Stan coughed.

"Well, I better get the gift shop running. Tourists won't trick themselves. Will, you're helping," Griunkle Stan said gruffly, and Bill nodded.

"Okay."

Grunkle Stan walked away, and as Mabel released Dipper, he felt Bill's hand brush his shoulder when he followed Grunkle Stan. Dipper shivered, thinking of last night. He glanced at Bill's back and Dipper could swear he heard a small giggle escaped Bill's halfway parted lips. Dipper wanted to fall into the bottomless hole and fall forever, but h knew he would regret the decision later. He and Bill would tell everyone eventually. Not about the sex. But everything else. Definitely before the end of the summer.

"Dip Dop! Guess what we're doing today?!" Mabel screamed, her face lighting up like a Christmas tree on the Fourth of July.

"What, Mabel?"

"We're gonna go see the Multibear! He sent me a letter from his cave the other day, and he says he needs us as soon as possible, if we can swing it. And I'm sure you know that when I the Multibewar needs us, we can always swing it." Mabel said, pumping her fist.

"Of course! Let's go to the Multibear!" Dipper said, almost forgetting about the pinkie promise and him and Bill and their night. He still wasn't sure whether that was okay or not, and he thought it might be good to see the Multibear. The Multibear knows things, he was wise. Wise enough to listen to BABBA. Dipper pumped his fist too, and they set of into the forest to go see the Multibear.

Meandering along in the sunshine and all this green leafed wisdom and magic made him want to tell Mabel. She was chattering on and on about something or other, how she was planning to win over another kid who had stumbled into her clutches, when Dipper decided. He had to tell Mabel. He had to tell her because it made him feel like shit when he didn't. Keeping things from her wasn't his style. At all.

"Mabel," he said, stopping her rant over love. "Mabel I really need to tell you something."

"Anything at all, Bro Bro!" She said, loud enough for a bird to fly away into some distant treetop.

"Me and Bill- I mean, me and Will... well, Will's name is Bill 'cause he's Bill Cipher, the triangle dude that we fought the first year we came here, but Bill and I, oh God, is this even a good time? I mean, I should have waited. I should have conferred with Bill before... No, well it's already out of your mouth, Dipper. Bill and I are... Bill and I are... in a relationship," Dipper said, not taking his eyes off the ground once. Mabel was silent. So silent, it actually forced Dipper to look up to make sure she hadn't walked off or something. When he looked up, she was smiling.

"I'm not too sure how I feel about Will being Bill... I'll need so time... but honestly, Dipper," she said, and he was expecting a lecture. Looking back, it was never going to work, was it? She might be hopelessly romantic, but she's smart. "I just wanna say... I. Told. You. So! I knew it! I knew it I knew it I knew it I knew it I knew it!" She fell to the ground, giggling and Dipper stopped walking. He shouldn't have been so surprised. He smiled at her.

"So you're not incredibly angry that I kept this from you for a little?" He was still worried.

"Oh, Dipper, you little fiend! Why would I be angry when I so totally knew it!?" She stood up, still laughing and punching him in the arm. They kept walking, and Dipper didn't feel quite so bad about everything. One down, the most important one down, and two to go. He felt a little lighter and for once he could actually enjoy the beauty of the forest in summer. There were transparent green leaves everywhere and wildflowers blooming around the edges of the path, and much deeper into the forest if you cared to look. Soon enough, though, they were out of the forest and climbing up a steep slope, one that Dipper knew well. It was the Multibear's slope. Occasional squeals of surprise from his right, from Mabel, but she seemed to be fine. Over the few years they had been coming here every summer, Dipper had climbed this place a lot and he knew every handhold and foothold. It was kind of his training routine. Exercise or something like that, you know?

When they finally reached the top, a great dark cave yawned out before them. Dipper glance behind him. Mabel was still in one piece, and had made it just a little slower than Dipper. She was naturally agile.

"Are you ready to go in?" He asked her, and she nodded, smiling. He nodded back and they walked into the cave, leaving the fresh air and bright sunlight behind them.