It was after one in the morning by then, but for the Pines twins, they were no longer feeling tired at all. It was like they had tapped into an oil well: the pressure was released, and their passion started to erupt.
Neither of the twins were very experienced with kissing: they each only had kissed one other person, and both of those were innocent, closed-mouth smooches. Now with the feelings of long-suppressed love urging them on, Mabel and Dipper wanted to figure out how to make kissing more pleasurable. Both knew about French kissing, but neither had tried it.
Mabel opened her mouth first, silently encouraging Dipper to try it, too. Soon they were wrestling their tongues together like pros, while their hands rubbed up and down the backs and necks of their partners. Their bodies were pressed together as tightly as their lips, though still seated awkwardly on the end of Dipper's bed.
They broke apart, both gasping for breath.
"Wow!" panted Mabel. "That's really nice! That feels so good!"
Dipper was also in awe. "Everything about you is wonderful … I love you!"
Mabel shivered with delight hearing that. She planted another urgent kiss on his lips. "That means I love you, too!"
They rested their foreheads together. Dipper ran his hand through Mabel's hair and caressed her face, and she hummed happily. They stared into each other's eyes again.
Suddenly Dipper was uncertain. "Mabel? Are we … is this … okay?"
"I don't know," Mabel replied quietly, looking down. "I know we're not supposed to do this." She looked back up to his eyes. "I'm not supposed to feel this way. But I do!"
"I do, too!" Dipper said with certainty. "I think I've felt this way a long time, but I just didn't realize it."
Mabel shifted, backing away enough to pull her right foot up onto the bed and rotate her body to face Dipper more comfortably, but kept her arms firmly around Dipper's neck and back. "So when did you realize it?" she asked him.
"Just tonight," he told her. "When we were in the river at the waterfront. When I was trying to make you get up."
Mabel's expression turned stricken. "When you were crying! I completely forgot about that! I'm so sorry!" She pulled his head towards her and kissed Dipper's forehead.
"It's okay. Really! If you hadn't been in that state I might never have realized how I feel about you." He kissed her lips gently. "What about you? When did you see this?"
"Oh, I was way ahead of you!" Mabel said proudly. "I had it all figured out way back … to this morning!"
Dipper smiled at the revelation that they would both discover their love on the same day, then thought a little more about what Mabel had said. Then his eyes widened, and his mouth formed a small "o". "Wait a minute," he said slowly, then his smile started to return. "In the shower, this morning?" he asked slyly.
Mabel's hand flew to her mouth as her eyes grew wide with embarrassment. "You did hear me!" she cried in a hoarse whisper. "What did you hear?"
"That you had a really great time, mostly!" Dipper retorted, as he turned his body as Mabel did to make himself more comfortable. Mabel blushed, and Dipper grinned at her discomfort. "This serves you right, after all the grief you gave me today."
"Oh, shut up!" Mabel shot back, forcing the issue by leaning forward and occupying Dipper's mouth with her own.
As they kissed, they were both leaning forward awkwardly, their legs now in the way. Without losing the lock on Dipper's lips, Mabel grabbed the front of Dipper's bathrobe and yanked him and herself up towards the head of the bed, then grabbed hold of his shoulders as they flopped back to the mattress on their sides. They both laughed into each other's mouths happily.
Their arms went around each other as the kiss heated up. Soon hands were rubbing up and down each other's backs and sides. Their torsos pressed together as their arms squeezed tighter. Without any thought on their parts, their legs slid next to each other, then Mabel instinctively allowed Dipper's knee between her knees, and their legs started intertwining, seemingly of their own accord. Both of them began sliding their legs up and down together.
Bare legs.
And completely bare bodies, covered only by bathrobes.
Their brains clicked in to the sensations they were both feeling at the same instant. They stopped the kiss cold, their legs and hands freezing in place, and stared at each other, panting and unsure.
Mabel broke the silence first. "What are we doing, Broski?" she asked through ragged breaths.
"I don't know," Dipper gasped back. "What should we do?"
Mabel stared at her brother. "I don't know that, either," she replied, "but ... " she paused with uncertainty, "there's lots we … could do!" Her hand slid down slightly from the small of Dipper's back to the very top of his butt, as if to emphasize her point.
Dipper's hips made a tiny reflexive thrust, pressing their groins together. They both inhaled sharply, still staring wide-eyed at one another.
Slowly, Dipper's hand was sliding around, from between Mabel's shoulder blades, to the side of her rib cage, his thumb bumping against the underside of a soft, pliable curve of flesh beneath the robe. Mabel's mouth opened and she gasped, pushing herself tighter against him.
Dipper swallowed, then nodded slowly. "Yeah … lots we could do!" he whispered quietly, but trembling almost fearfully.
Mabel's hand slid down and across to Dipper's hip, gripping her fingers through the robe into his cheek. His pelvis ground into hers in a circular motion, and he let out a small whimper, as his eyes almost closed and his neck craned back.
She felt his hardness easily through the fuzzy material. "And I bet it would feel so good!" Mabel whispered back, lightly brushing her lips to Dipper's chin.
He leaned his head back down and touched his lips to hers, then pulled back. His hand moved slowly back away from her breast. His face grew more serious. "But ... isn't it supposed to hurt you the ... you know, the ... first time?"
Mabel let go of Dipper's hip to hold his face. "Yeah, that's what they say," she said softly.
Dipper also moved his hand up to her face, gently caressing her cheek with his thumb. "I don't want to hurt you! I would never hurt you!"
"Daww!" Mabel breathed, smiling sincerely. Then her gaze turned pensive. "And we are pretty young to think about ... you know ... doing it!"
Dipper's eyes shot open. "And you could get pregnant!" he rasped, almost in a panic.
Mabel stiffened with fear at the thought, then immediately relaxed. "Nah. I just finished my period three days ago." She ran her fingers idly through her brother's messy hair. "I'd be okay."
"Oh! Really?" Dipper replied quickly, even hopefully. Then, he looked away. "We still shouldn't … I don't think … but, maybe we ..."
Mabel's eyes widened. "Dipper." Mabel's voice was soft, but intense. "You're really thinking that we could … go all the way? You know, that's," Mabel paused for a moment, trying to avoid the word she didn't want to use, "... incest! I mean, that's pretty heckin' weird!"
"And this isn't?" Dipper replied, stroking his hand through Mabel's hair. "We've already crossed a pretty weird bridge here, haven't we? And …" he looked back into Mabel's eyes, "I'm not sorry for anything we've done so far."
Mabel's felt her heart melt a little more. "Me, neither … I love you, Dip," she said weakly.
"I love you too, Mabes," Dipper whispered back in reply, touching his lips to hers again.
The twins tried to keep things slow and under control. Their free hands stayed on each other's faces and hair, and their kisses were light and brief. But slowly the kissing became deeper again, more intense. First Dipper, then Mabel shortly after, allowed their hands to wander down each other's bodies again.
Dipper had read that girls liked to be kissed on the neck. He broke away and lowered his lips down to near Mabel's left ear, and gave her a soft peck. She stretched her head back, and a tiny moan escaped from her mouth, letting Dipper know precisely how much she liked it. He took that as permission to plant more, harder kisses.
The urge to draw closer to one another continued to grow. Their bodies moved together in a slow rhythm. Their bare legs now rubbed against each other uninhibited. As Dipper's kisses graduated to gentle suckling and soft nibbles, Mabel's coos grew louder and longer. Urgently seeking closer contact, her hand reached for his behind, and pulled.
Dipper groaned and lifted his head slightly to move his mouth to the other side of Mabel's neck. She anticipated that he was going to let her return some kisses of her own. Instead of finding his mouth, Mabel's lips bumped into the bridge of Dipper's nose. No matter, she pressed forward, and softly kissed Dipper's closed eye.
His reaction was to instantly shiver and draw an unsteady, ecstatic breath, as they suddenly discovered how erogenous Dipper's eyes were. On pure reflex, he squeezed Mabel to himself as hard as he could. His free hand had just been caressing behind her knee, and as he pulled, his palm slid up beneath Mabel's robe to the back of her thigh.
For the second time, they froze, gasping for breath. Noses still touching at their tips, they stared at each other, eyes ablaze with passion. Silently they knew. If this went any further, neither of them would be able to stop themselves.
"We should …" they both panted together, then again simultaneously "You first." They laughed softly, partly calming the heat of the moment, then silence as the twins gazed at each other. Their hands remained precisely where they were, dangerously close to forbidden territory.
Dipper broke the silence. "Should we keep going?" he asked, searching Mabel's face for confirmation or doubt.
Mabel felt something in her abdomen flutter, knowing what that meant. She also needed to know how Dipper felt. "Do you want to?" she said unsteadily.
Her brother's expression was an anxious mask of longing and uncertainty. "Part of me … God yes, Mabel, I do! But …" he trailed off, unable to put his thoughts into words.
Mabel's grip on Dipper's butt tightened as she heard the desperate desire in his voice. But she also understood the words that wouldn't come: she knew Dipper's concern for her, his worry that they not regret something that they couldn't take back. She knew that whichever way she decided, he would accept without hesitation. It only made her love him more.
But that's not fair to him, she thought. This should be a decision by both of us!
"We've got two options," she whispered. "We should wait, or …" she stopped for an instant, "we keep going."
Dipper nodded. "We need to be honest," he whispered.
"We should answer together," said Mabel.
He nodded again. "On three?"
It was Mabel's turn to nod. "One …"
Dipper's voice was shaking. "Two …"
Together, with eyes locked on each other, they quietly said, "We should wait."
They exhaled in unison, both relieved that the other felt the same way. The tension in their bodies slackened, as the glorious, excitable hormones flooding their systems slowed, but only a bit. They pulled each other into a warm, close embrace, still breathing deeply and unevenly.
Dipper pulled back first, looking ashamed and apologetic. "I need to go into the bathroom, Mabel," he said quickly. "Like, right now!"
Mabel was thinking exactly the same thing. On hearing of Dipper's identical "problem", her hips betrayed her by unconsciously squeezing and pushing into his hips. They both gasped, then with effort she released his body from hers. "Don't come out until I tell you!" she said shakily.
His eyes nearly popped from his head as he processed what Mabel was talking about. "Oh fuck!" Dipper cried as he leapt to his feet and awkwardly ran to the washroom, slamming the door behind him.
Less than ten minutes later, still in their robes, a much more relaxed pair of twins were back together on Dipper's bed, Mabel comfortably laying on top of her brother and looking down, while they both dreamily caressed each other's hair and faces.
Dipper gazed at his sister in wonder. She was everything to him! Partner in mischief. Mystery Twin. Best friend. Soul mate. Love of my life.
Mabel stared smiling tiredly at her brother. She loved every bit of him. She didn't think she could be happier, and she adored making him happy, too. Best brother ever!
"I love you so much!" they said together, then smiled knowingly. "Twins!" they chimed in unison. They laughed softly, resting their foreheads together.
Mabel thought she was getting heavy on Dipper, so she slid off and they curled up together on their sides, stroking each other slowly and kissing deeply and lovingly. She tried to stifle a yawn, but when Dipper also yawned, hers emerged as well.
"You tired, too?" she asked, gently wiping hair from his face.
"Yeah. It's been a long day," Dipper replied quietly. "We should get changed and wash up before we go to sleep."
Mabel flopped over and spooned in to Dipper, pulling his arm around her. "Just a few more minutes of snuggling. Everyone needs snuggle time on their birthday. It's a new birthday rule I've just decided on." Mabel's voice was a dreamy sing-song.
"Technically, it's not our birthday anymore, goofball," Dipper said, nuzzling the back of Mabel's neck, intertwining his legs into hers, and linking his arms around her stomach. "It's Sunday," he said drowsily.
"Shut up, nerd," replied Mabel smiling, her eyes closed.
The phone between the beds was ringing.
Dipper dragged himself out from sleep to find himself and Mabel sprawled on his bed. They had fallen asleep without getting under a sheet, and had stayed huddled together. He scrambled over Mabel to get to the phone, producing a muffled complaint from her as he fumbled with the handset. "Hello?" he answered blearily, his voice cracked and hoarse.
"Whoa! Dude! Did I wake you up?" came Soos' unmistakable voice at the other end of the line.
"Yeah, Soos … Why are you …" Dipper's eyes finally focused on the clock beside the phone. 11:50. Check out time was Noon!
"Oh, crap!" he exclaimed. "We slept in! Mabel!" he called. Mabel heard the urgency in Dipper's voice and forced her head up in confusion. "Where are you, Soos?" Dipper asked hurriedly.
Soos was happy as usual, but concerned about the kids getting in trouble. "Downstairs, in the lobby. Nice place you're stayin' in! Ya know, Dude, I can come up and help you get your stuff ready …"
"No!" Dipper shouted into the phone, in a panic as he looked at himself and his sister, obviously wearing nothing but bathrobes. Mabel was awake now, and looked at him in confusion. He lowered his voice somewhat. "No, it's okay, Soos, don't come up," he emphasized so Mabel would understand. "We'll be down as fast as we can!" and he slammed down the phone.
"We've got 10 minutes, Mabel!" Dipper cried.
It was pandemonium. Mabel screeched and leapt to the bathroom to quickly try to wash up. Dipper grabbed the soaked, soggy clothes from the bathroom and the floor and stuffed them in one of their suitcases. Into the other suitcase, they tossed everything else. They managed to find clean clothes and put them on, but as they were on the way out the door, they both thought they knew exactly what they looked like: two guilty teenagers who'd just done more than they should have together.
Thankfully, they had the elevator to themselves. They had only a few precious moments before its doors would open downstairs. "Mabel?" Dipper asked, "Are we okay?"
Mabel looked surprised. "Of course we are! Why wouldn't we be!" as she ran her finger over his nose and lips. Her ability to be positive about her life never ceased to amaze Dipper.
"Well, we can't let on to Soos about … you know … this!"
"I know," she said confidently, "It's going to be hard, but we'll manage."
The elevator was starting to decelerate for its stop at the ground floor. Dipper leaned forward, and they quickly kissed, breaking apart just as the doors were opening. Soos saw them and waved from across the lobby. The twins headed toward him and the desk for checkout.
"I love you," said Mabel quietly as they walked, glancing at her brother.
Dipper smiled self-consciously. "I love you, too," he replied equally quietly, glancing back at his sister.
The ride in Soos' truck on the way back to Gravity Falls was awkward. For four hours, the twins had to tell a story as if they had a great time (which they did), without hinting at what they couldn't let Soos know about. They also had to keep from touching each other or gazing at each other in ways that they hadn't done before. They didn't know if they succeeded in fooling Soos or not: they had found out last summer that he was far more insightful than he led on, or sometimes even realized himself. Regardless, he seemed to just be glad to have his little dudes back again.
When they arrived at the Mystery Shack late in the afternoon, Grunkle Stan was busy with a group of tourists. He made eye contact with the twins, but that was it. Thankfully, he didn't stop to talk to them: if he had gotten a better look at them he may have been suspicious.
Mabel took a shower first and changed into clean clothes again. Dipper waited for her to finish with his own change of clothes. As Mabel was leaving the bathroom, they stopped for a quiet kiss. It was almost a disaster, as Stan had come in from outside to go to his office. They separated barely in time before he came around the corner.
After almost getting caught, both forced themselves to act normal for the remainder of the day. It was agony. All they wanted was to be able to do what young people in love do, and they knew they couldn't.
Finally that evening after supper, they told Stan they were going to bed. Just as Mabel finished closing the door to their attic room, Dipper grabbed her. Their kiss was passionate, and full of pent-up longing.
Mabel was the first to speak. "I didn't think it would be this hard!" she whined, holding Dipper's face.
Dipper agreed. "I'd almost rather we not have to live together, then we wouldn't have to see each other all the time!" Mabel looked at him with fake anger. "Almost rather, I said!" Dipper repeated with a smirk, glad Mabel had lightened the mood.
"Good!" she said sensually, gently running her fingers into the hair on the back of Dipper's head. "Because if we didn't live together, we wouldn't be able to do this right now!" With that, Mabel pulled his face to hers, and the twins lovingly melted into each other's arms.
Over the next several days (their last week of the summer), Dipper and Mabel found every excuse to find a place alone. A picnic in the woods one day. Exploring caves the next. A swim at a remote pond another day. Each time, they would arrive back much happier, but somewhat more stressed than when they left.
Then each night before going to bed, the twins would again sweetly bask together in the wonders of young love. They were comfortable knowing that they didn't have to push their relationship further into a more sexual direction. There would be plenty of time for that, when they both felt they were ready. The delicious torture of anticipation only made their time together that much more intense.
