ieatsmiledip here, sorry this took so long. Next chapter will be the actual lemon but I hope you enjoy the lead up I wrote!
Dipper and Mabel got up and went to their shared tent. Dipper turned on a flashlight, which dimly illuminated the tent. They both turned away from each other and began to change, both peeking over their shoulders occasionally. Dipper took in Mabel's smooth, slightly tan skin and perky, B-cup breasts. Her rounded butt glowed in the light of the flashlight, and her hair formed an angelic halo around her head.
On the other side of the tent, Mabel was spying Dipper's toned muscles, which had formed over the last two years. His shaggy brown hair seemed to sparkle to the love-stricken Mabel. The moment ended when both twins finished pulling on their pajamas and got into their sleeping bags. They turned away from each other and lay, thinking. Five, ten, fifteen, twenty minutes passed before Mabel spoke.
"Dipper?"
"Yes Mabel?"
Mabel sighed tentatively. "I've made my decision."
"Mabel, I have something to say," Dipper said, sitting up in his sleeping bag.
"Dipper, wai-" Mabel began to say, but was interrupted by Dipper.
Dipper sighed sadly before beginning. "Mabel, I'm sorry about what happened. If you think it's wrong, or disgusting, I understand. But there's something about you that I just… can't seem to resist."
Mabel looked surprised. "Do you mean it Dipper?"
"Of course."
She blinked and sat up. "Dipper, I… feel the same. It's just… we can't."
"Why not?" Dipper said, getting a little heated. "If we feel this way, what's to stop us?" It's not like they could do anything."
Mabel's POV:
Mabel smiled at Dipper's traditional determination. She thought about all the times Dipper had sacrificed to help her, and how little she had given in return. She decided that she would sacrifice for him. She was willing to lose everything. Friends, approval of their family, respectability.
She reached out and grabbed Dipper by his shoulders and pulled him in for a passionate kiss.
Mabel could feel Dipper still trying to talk into her lips. He stopped talking and froze as Mabel worked her lips against his. Dipper realized what was happening and reached behind Mabel to push her lips to his. He could smell the delicate strawberry scent of her hair and felt her soft lips against his as Mabel's mouth parted slightly, allowing tongues to enter the passionate fray. Dipper and Mabel began to crawl out of their sleeping bags and onto the open floor, in constant liplock. Mabel fell backwards on to her back with Dipper on top of her. They separated their mouths and gazed into each other's eyes, breathless.
"Dipper," Mabel said.
"Yes Mabes?"
"I think I'm ready for you."