Rachel reminds him about their research

He can’t help suspecting that Rachel knows exactly how badly he want to start slamming his rock-hard shaft into her red-thatched pussy, but she doesn’t take the hint.

“OK, so pre-ejaculate is the first step in the process,” Rachel says thoughtfully, running her tongue over her lips in a way that makes him even harder, though he hadn't realized that was possible.

“But I promised that I’d, um, help you with your project too,” she continues, a little shyly, “So we’ll trade information until we’re satisfied. Satisfied with our research, I mean.” His eyes are darting back and forth between Rachel’s jutting breasts in a tight baby-blue t-shirt (is that a hint of nipple?) and the soft red pubic hair he is longing to run his fingers through, so he almost misses the quick blush that accompanies her last statement. She is trying to act detached and objective but now he suspect her “scientific research” is more of an act than she lets on.

He smiles gently. If he's got her, there's no need to rush her. Except for the pressure building up in his cock...

“Well, what’s the first step in the process for you?” he asks playfully.

Rachel finally relaxes and stops pressing her thighs so closely together. As her feet slide apart, he gets his first real look at her pussy. Her red hair is short, and--wait! He hadn't been able to see it before, but it was shaved into a heart shape!

There is a slight flush creeping over her lips. He isn't sure, but he thinks he can see a bit of moisture glisten in her slit.

“I guess, um, the main first change is the....erectionofmyclitoris,” Rachel finishes in a single gasp. It probably does not help that his erection bobs when he hear her say “clitoris.” Let's face it: he’s a geek, and he’s never heard a girl talk about being aroused before. And she’s aroused by him!

But his cock demands that he push this along a little. “I’m not really sure what that means,” he tells her, “can you show me your clit?”

She licks her lips again and nods. He slowly lowers himself to his knees to get closer to her as her right hand slides down through her fiery red bush to encircle her clit. He peers at the little bulb from a few angles, pretending to study it for his report. Then, he slowly raises his right hand, as though investigating for himself. As his thumb makes contact with her clit, she shudders a little bit. He starts to rub small circles on the top of her clit as she leans back against the sink in the girls’ bathroom, her breathing becoming shallower. He guess she's never had a guy do this to her before.

“The other change--gasp--that you should write about for this stage--gasp--is a moistening of the--gasp--vagina,” Rachel tells him as he continues his ministrations.

He can take a hint. He slides two fingers into her pussy and is shocked at how warm and slick it is. He continues rubbing her clit from outside while fingering her, and is rewarded with soft sounds of pleasure. He can feel her vaginal muscles contracting around his fingers as she starts moaning in earnest, and Rachel’s back arches, thrusting her full breasts into the air.

Without thinking about it, his idle left hand drifts down to his cock and starts pumping into time to his fingers' thrusts into Rachel’s pussy. He’s pretty sure they’ve skipped a stage or two in their research, but neither of them is going to complain about that right now.