Why, hello, there! This is crazyguitargirl, back with another installment of Riley's story Sibling of Mine. This chapter is super awesome, and it has an amazing plot twist at the end. So, enjoy!

Dipper yawned and turned over on his side lazily. His arm dangled off of the side of the bed, grazing the cover of the "3" book. His eyes opened slightly, a forced effort through the crust that developed over his eyes through the night. He grabbed the book by the side with one hand and heard a loud ripping sound. Dipper's heart stopped.

Oh, shiitake, Dipper thought frantically as he bolted straight up. He dropped the book involuntarily and pulled his hands away. He peered over the bed at it, as if afraid to touch it. He finally picked it up gingerly, his rapid, heaving breaths ruffling the ripped and yellowed paper.

"No. No, no, no, no, NO!" Dipper cursed at himself over and over again as he analyzed the page. The page was headed Alchemists in old-fashioned script, with a major rip from the bottom left, close to the spine, reaching all the way to the base of the second 's'. Dipper, seeing that there was no way to fix it, tucked the ripped paper carefully in the book. He didn't particularly care about Alchemists or Alchemy as a whole as he was just reading the section for leisure, but a passage about Dragons was on the back of that page and, come on, Dragons are pretty cool. He carefully got off of his bed and slid the book into its rightful place in the bookshelf. He sighed and tried to slow down his heart rate. He pulled off his clothes from yesterday and donned new clothes. He started to walk down the stairs when a thought pierced his stomach. Grunkle Stan! Dipper never apologized about the previous morning! No doubt he'd be downstairs enjoying an omelet right now, getting ready for the day's tourists. Dipper tiptoed back to his room and quietly shut the door and locked it, finally pressing himself up against the rough wood. If there was anything Dipper truly hated, it was awkward situations. Dipper looked at the clock: 9:30 am. The shack would open in a half hour. This gave Dipper enough time to pace around his room and think for a while. He went over to the bed and sat on it, thinking deeply. One question kept resurfacing and he kept pushing it back, but he couldn't keep the thought at bay: What did Robbie want? If he met Dipper in the woods crying, he'd probably laugh at him, or throw a pinecone at him, or be rude, or something else that's violent. Dipper shuddered at the thought of what the could've done but couldn't shake the feeling of complete and utter embarrassment. Instead of being the bigger man and helping Robbie when he kindly asked for it, he retaliated in a completely violent way. That wasn't right! No wonder he's so lonely. As Dipper scolded himself, the minutes ticked by. Eventually it was 10:00, then 10:15. Dipper got up and walked slowly over to his bookshelf where the "3" book rested. He gingerly ran his fingers over the spine.

"And, to further prove you're an idiot," Dipper spat at himself harshly, "you ripped your book. RIPPED IT! That book was your ticket to surviving this demented town! What if there really are dragons in Gravity Falls?! I mean, You've seen gnomes, time travelers, a gremloblin, body-swap rugs, ghosts, a merman, clones more than once, and then some! You're a grade-A idiot, you know that?" Dipper kicked the base of the bookcase and stifled a yell as a Rick Riordan book fell on his head. As he made a mental note to return to the "Heroes of Olympus" series, he stole a glance at this clock. 10:21. Perfect. As Dipper finally walked out of the attic with his heart-rate slowed for once, he couldn't help but feel like he was forgetting something. Oh well. Couldn't be helped.

Walking down the steps with a but more speed than yesterday, Dipper walked downstairs and into the kitchen. He popped a piece of bread into Grunkle Stan's ancient toaster and waited slowly for it to finish. Er, burn. Whatever. As Dipper aimlessly stared out the window, the toaster dinged signaling completion. Dipper snapped out of his thoughts to shove the blackened piece of toast into his mouth. The gross taste of burned food repelled his tongue. Dipper didn't even bother to try to eat it yet. Pulling on his shoes, Dipper started to walk through the shop. He almost choked on his uneaten toast. Wendy. Wendy was working today! Dipper slowly crept back into the house, his heartbeat shaking his whole body. As soon as he was back in the house, Dipper choked down his toast and did what he usually does: make a strategy.

"I guess all you can do is act normal," he said softly to himself. "If she spits on you... well, you deserve it." Dipper took a huge breath and walked through the shop. It was going great until he heard Wendy scoff.

"Well, at least you're not hiding today," she said, acting out of character. She must really be mad.

"Look Wendy, I know you're upset," Dipper said slowly, "and all I can say now is that I'm sorry. and I am. Really." Wendy turned her nice up and crossed her arms.

"Whatever." Dipper lowered his head and walked the rest of the way to the door. Relieved that she didn't spit on him, Dipper walked out into the summer sun, letting it shine onto his face. He figured the first and most beneficial thing for him to do is go figure out his thoughts and work out his apologies. One for Mabel, one for Grunkle Stan, one for Wendy, and even one for Robbie. Dipper walked out to the place he believed was the most calm. As soon as he was amongst the grow/shrink crystals, he laid down to think. He couldn't delve too deep into his own thoughts before the scent of body spray bombarded his nostrils. Dipper opened his eyes only to have them water and to see Robbie looking at him through the trees. He sprung to his feet, and Robbie stepped back.

"Whoa, kid, you already took out one of my shins. Please, chill," he said feverishly. Why was he acting so weird?

"Don't worry...? I won't hurt you," Dipper said slowly, not believing those words were coming out of his mouth. "I just wanted to say I'm sorry for hurting you and I' sorry for ruining your relationship."

"Hey, It's okay," Robbie said slowly. He was playing with the tassels on his hoodie, a clear sign something was on his mind. Dipper chose to ignore it.

"I was thinking we should just... part ways. Don't bother each other. Pretend like we don't know each other? Maybe?" Dipper didn't wait for an answer. Instead, he stuffed his hands in his pockets and started to walk away, carefully avoiding the colored beams of the crystals.

"No, wait," Robbie said, chasing after him.

"Robbie, if you're trying to apologize, it's okay. I don't want to remember any of our skirmishes." Dipper shrugged him off and continued to walk away.

"But I do!"

"What? Why," Dipper demanded, seeing Robbie again as a threat. "Do you have something against me?"

"My memories were lost once and I don't want to lose anymore," Robbie shouted, matching anger with Dipper.

"What?" Dipper yelled defensively. "What are you talking about? Are you insane?"

"Just...," Robbie said, becoming quiet. "Just don't freak out."

"What the heck man," Dipper accused angrily. "You're acting way out of character. I'm leaving!" He couldn't think of anything better to do but leave. His head fell between his shoulders as he jogged off into the woods, when Robbie's words stopped him cold.

"Dipper, wait."

Robbie called him Dipper. Not 'kid' or 'junior', but Dipper.

"There's something I need to tell you." Dipper turned around and slowly walked back to Robbie, the crystals throwing surreal light patterns all around him. He tried to say what but it came out an in audible squeak.

"You... you ready? Just, like, don't freak out..." Dipper braced himself. Robbie took a deep breath, contemplating whether or not to tell him.

"Dipper... I'm your brother."

Riley's Note: Things just got real :D. For the people still reading, all three of you out there, I hope you enjoy what's in store! I'm going off to camp soon and I don't think I'll be able to send my chapters to CrazyGuitarGirl during that time so don't expect a new chapter for a while. I'll let your rage settle down ;). Thanks so much for your reviews and favorites and follows and I hope you'll continue to enjoy this story! Bye!

Crazguitargirl: This chapter, guys! I absolutely love it, and I like where the story's been going. Remember in the reviews; don't thank me if you have liked the story, don't judge Riley for writing it because a) it's great, and b) I'm the one who is uploading it, so be mad at me XD

Also, we all thought that the title was talking about Mabel, weren't we ;)