It was less than a mile to the river along a trail through the forest that bordered their house. They walked in silence, savoring the smells and sounds of the forest until they got to the river. Then a little further along the bank they came to a small grassy clearing under a big oak tree that overhung the river.
“God, I love this place,” Kelly said, flopping down on the ground on her back, her arms flung wide.
“It’s the best,” John agreed, noticing that her shirt had pulled up, exposing the undersides of her breasts.
“John, why don’t you ever go out with any of the girls?” Kelly suddenly asked, pushing up so that she was propped on her elbows.
“I don’t know,” John mumbled, glancing at her and seeing that the bottom of her breasts were now almost completely exposed up to the edge of her nipples.
“I know so may girls who would give anything to go out with you,” she said. “I mean, you’re the best-looking guy in the whole school.”
“Right. Who says?” John asked, snorting in contempt.
“Well, I do,” Kelly said, smiling at him. “And I’d know.”
“Oh, how’s that?” John asked, unable to avoid smiling.
“Because I’m dating all the best-looking boys and none of them even come close to you,” she replied.
“How come you always go out with someone different?” John asked.
“Why not!” Kelly said. “I’m not looking to only go out with one guy. I’m young. I want to see what different guys are like.”
“Are they really all that different?” John asked.
“Oh, yes, they sure are,” Kelly laughed. “No two alike.”
“Not at all?” John asked.
“Well, they all want to fuck,” Kelly said. “That’s for sure. But then they’re different there, too.”
“What!” John exclaimed, staring at her.
“Oh, you know,” Kelly said, laying back down, her hands behind her head.
Now her shirt pulled up so that her nipples were exposed and John watched as they crinkled and screwed themselves into hard knots. Her feet were flat on the ground about shoulder width apart and John could see where the material bunched into her crotch. He wasn’t certain, but he thought that maybe she wasn’t wearing any panties.
“What do you mean by that?” John asked again.
“Well,” Kelly began, sitting up cross-legged in front of him, “some guys are bigger and some are more tender and some are faster.”
“Are you talking about….”
“Sex,” Kelly said emphatically, seeing him blush.
“Uh, are you, you know, doing it with lots of different guys?” John asked, now absolutely certain that she wasn’t wearing any panties.
“If I go out with them, I make sure they fuck me,” Kelly said, watching his face.
“Kelly!” John said, his face turning crimson and his cock twitching in his shorts.
“That’s why I want you to go out with some of my friends,” Kelly said plaintively. “They’d fuck you in a heartbeat and then we could talk about it.”
“Talk about it!” John exclaimed. “What do you mean?”
“I don’t have anyone to talk to about it,” Kelly said. “You know, like how do you do this or do you like that, those kind of things. If you were fucking my girlfriends, we could compare notes.”
“Jesus, Kelly,” John said, shaking his head.
“Or if I knew some older guys that had more experience, they could probably tell me how to do things that they like,” Kelly went on.
“Why is it so important?” John asked, staring at the red hairs that were sticking out on either side of her shorts at the crotch.
“Oh, John, I love sex so much that I can hardly think of anything else. Just thinking about it or talking about it gets me so excited,” she said, bringing her hands up to cover her breasts, squeezing them firmly. “I know you’ve noticed.”
“It’s impossible not to,” John said, now openly looking at her breasts when she lowered her hands.
“Let’s go swimming,” Kelly suddenly said, jumping to her feet.
“We didn’t bring suits,” John observed.
“So what?” Kelly said. “You afraid to skinny-dip with me?” she asked, smiling at him.
“I don’t know if we should,” John said, shocked at the suggestion being voiced that was foremost in his mind.
“Well, I’m going in then,” Kelly said. “You join me if you want to,” she said, stepping down to the edge of the bank and pulling her shirt off over her head, her back to John. Dropping it next to her, she quickly skinned out of her shorts and dove into the river, leaving a gape-mouthed John standing on the bank.
“Come on, silly,” Kelly said as she broke the surface and turned to look at him. “The water’s great. Don’t be embarrassed.”
“Well, I am,” John said, truly embarrassed and feeling his cock growing in his shorts to prove it.
“I’m your sister,” Kelly said with a laugh, floating on her back, her breasts sticking up out of the water, and her fiery-red pubic hair just visible below the surface. “Besides, nobody’s here, is there?”
“No, I guess not,” John agreed, staring at her.
“And nobody’s likely to come here, are they?” Kelly asked, her eyes on his growing bulge.
“Not likely,” John agreed.
“Then come in the water with me,” she said, “or I’ll come out there and drag you in, clothes and all.”
“You couldn’t even if you tried,” John laughed.
“But I’d try, and that’s the thing, isn’t it?” Kelly laughed, seeing the truth of what she said register on his face. “If you’re not in the water by the count of three, I’m coming out to get you,” she warned. “One. Two. Three. Then here I come,” Kelly said, swimming towards the bank.