"We can't..."

"Yes?" Crystal smirked, looking up at him with mischievousness in her eyes while playing his twitching erection.

"We can't," Jonathan groaned, shaking his head. Mentally he wanted her to stop giving him a handjob but physically he wanted her to keep doing it until he came.

"What do you mean we can't? I know I can!" she giggled and glanced down at his large cock in her small hands. "And from the looks of it so can you!"

"I could get dismissed from the project before it even starts if word gets out we're fraternizing!" he struggled to explain while she continued to jerk him off.

"We're both consenting adults..." she purred.

"Crystal..."

"Both you and NASA are naive if you think none of us are going to get laid in the next two years," she sighed, rolling her eyes. She was thoroughly shocked and disappointed that he actually turned down her advances because no straight man had ever rejected her before (it helped that she was often with her sisters and as identical triplets they were a fantasy most men would never have the opportunity to experience).

He wanted to retort her accusations but he knew deep in his heart that he was set up to fail to try to remain chaste while confined in an enclosed space with twelve beautiful women. "I'm not naive but I just want to remain professional and I don't want any of us to get hurt."

"So no sex?" she asked with a cute frown.

"Not today," he replied with a smile that hid the fact that he really wanted to fuck her hard like he did with Jen.

"That's not a no!" she giggled, teasingly squeezing his thick veiny shaft. "So how about a raincheck?"

"We'll see..."

"We'll see?" Crystal huffed. "I guess we'll see if you want to cum or not?"

Jonathan groaned when she suddenly let go of his dick and turned to leave the shower stall. His cock involuntarily twitched at the absence of her soft hands. "No, wait!"

Crystal was about to take a step out but closed the door instead. "Yes?" she wondered, turning around with a smug look.

"Fine, rain check," he sighed, resigning to the fact it was inevitable that the two of them were going to have sex at some point during the project, "but on the condition you don't tell anyone, even your sisters, about what transpired here."

She mimed zipping her lips shut.

"So you still need to cum?" she purred, teasingly running a manicured finger from his ball sac, along the length of his long shaft, to the sensitive tip of his cock.

He nodded.