This is the fourth chapter of the Chemistry series. You should probably read Chemistry 101, 102, and 103 first for some context (and buildup).
*****
Sarah gave Nate and Rob the knowing smile of a woman who is aware of her own sexual power. She trailed a hand over each of their cocks, which had sprung to life instantly upon her suggestion of a "round two" to their fucking. She had decided that Nate, who was longer but thinner than Rob, should take her ass. She squeezed his cock and winked at him.
"I hope you're up for the challenge, Nate. This is virgin territory right here. Actually, until this morning it was all virgin territory..." she trailed off, having revealed much more than she had intended to.
"What?" Rob's voice betrayed his incredulity.
"You were a virgin?" asked Nate, his disbelief ringing in her ears.
Sarah ducked her head, suddenly too nervous to meet their eyes.
"Holy shit," Rob murmured, "I would never have imagined...you were - you
are
the hottest thing I've ever seen."
Nate nodded, "I've never fucked anyone like you, Sarah. You're like a living wet dream. Walking around school with no underwear, jerking us off under the table in chem class, and you give the best blowjob I've ever had. And now you're talking about letting me put it in your ass!"
She looked at them shyly, abruptly realizing how crazy the past 48 hours had been. She was overcome by embarrassment at her actions. She started to fold herself into a little ball, tucking her knees toward her chin.
She had barely moved a few inches when her progress was arrested by two pairs of hands, pinning her to the bed with legs spread wide.
"Oh, no, you don't," Rob chided. "We're going to show you how much we appreciate your - what did you call it? - virgin territory."
He scooted down the bed until his head was level with her pelvis.
Nate cupped his hand against her jaw line and turned her face toward him.