Disclaimer: I do not own Star Trek and make no money from these words. I just take my favorite characters out to play…naked of coarse.

Authors Note: Special thanks to TalesFromTheSpockside for the beta work and all the ladies at the WA for the encouragement, pics and laughs.

The Experiment

"Have you told Commander Spock? I bet he would think it was hot." Gaila looked at her friend expectantly.

"Shhhh!" Nyota slumped lower into her chair as if hoping it would envelop her. She couldn't believe they were talking about this again. They were in the library and even though Gaila had whispered her question, it still felt loud.

Spock would agree with Nyota's assessment. He could hear them both loud and clear from where he was standing with a PADD in hand, hidden in the aisle behind the table where they sat. He was well aware he should not be listening, but he was rooted to the spot doing just that, nevertheless.

"He knows how I feel about him now, La," Nyota hissed.

Yes, he did. And his body became suffused with pleasure just thinking about it. The fact of their relationship was new. She was his.

"It would follow that he's aware that I think about him frequently, that he knows what his presence does to me." She went on in a whisper, "We don't need to discuss all the tiny details."

Spock's mouth twitched. He was well aware how often she thought of him and was relieved to know that he consumed her thoughts just as she did his. However, he did not agree with her comment about the 'tiny details'. They would be discussing what she had told Gaila…thoroughly.

Nyota felt like such an idiot! She knew she shouldn't have gone drinking with her friend last night. She had had too much to drink and as a consequence had shared way too much about Spock's effect on her.

She had told Gaila about the 'incident'. She told her how, a week ago, Spock had looked at her…just looked at her from across the quad, and she had climaxed. Had an orgasm, right there – sitting on a blanket in the sunshine, surrounded by people, soaking her panties and shivering with shock and elation, her mouth pressed closed in a tight line as she suppressed her body's desire to scream and moan. Nyota had been thinking about Spock, looked up and found his eyes studying her, fixed with desire on her, and it just happened.

She had continued, telling Gaila how it felt, as if he knew when she was thinking about him. That she loved to look up and find him looking at her, in class, in the mess hall, in the gym. He was so controlled in all other aspects of his being, so reserved in his interactions with her, his eyes locked longingly on her was intoxicating. She fantasized about him watching her, and it made her burn with lust. She had never thought of herself as an exhibitionist, but that's how he made her feel. She wanted him to watch her. She craved his hungry stare.

Gaila giggled. "Maybe you're right, I don't think any man should know he has that kind of power." She got a far-off, dreamy look in her eyes. "But it really is unbearably hot, Ny. No one has been able to do that to me. It must be the love thing. You know, cause you luvvvvh him." She started giggling again.

Nyota bit her lip, fighting the wide smile threatening to take over her face. That she did.

Spock walked away quietly, unnoticed by either of the women, disappearing from the library. He was filled with contentment. Nyota loved him. He felt the same.

"I wish to conduct an experiment."

Nyota looked up from the report she was reading at her desk in Spock's office to return his gaze.

"An experiment?" She tilted her head questioningly. "What kind of experiment?"

"I wish to observe you for a day." He paused as her brow furrowed in a confused frown, then pressed on. "Only you, with no distractions, to study the form of your body, in motion and stillness, the way emotions play across your face – when you think of me. I want to know those thoughts…if they mirror my own of you. I want to learn to read you, to see and experience…feel the effect my gaze has on you, what it provokes in you."

Oh shit….

Did he…Oh no!

Nyota cleared her throat, wishing she could diffuse the liquid heat currently stirring and pooling between her thighs under Spock's intense scrutiny.

Spock said nothing, but waited, arching an eyebrow in a subtle, knowing look.

Nyota didn't know what to say, shifting uncomfortably and rubbing her thighs together. Spock didn't miss the action; his eyes slid to the juncture between her legs, lingering there, then snapping back to meet hers.

Yes, he thought. This was indeed a logical pursuit, to expand his knowledge of Nyota's sexual appetites. They had not yet engaged in intercourse; his desire to not disappoint and, he must admit, lack of opportunity had delayed it. But when they did he would know how to please her, of that he was certain. She was aroused at the mere mention of the experiment. The actual exercise was sure to yield pleasing results…for both of them.

He would watch Nyota and she would know his eyes were on her, just as if they were his hands, his mouth. And as their day unfolded, and the experiment progressed, they would draw close to one another when the moment allowed, telling each other their desires in passing words and shared looks, in an erotic dance of foreplay, until they were too inflamed to allow even a breath to separate their skin. When that moment came, and they could not withstand the ache for each other's body any longer, he would steal her away and let his hands touch all that his eyes had caressed. He had seen her response last week to him, knew he had made her come with only his eyes telling her how he wanted her, that he was thinking of her too. And he would do it again before joining with her, discovering the sensation of her climaxing with him, around his hardened penis, against his hungry tongue.

"When?" Her voice trembled slightly as she spoke.

"I have cleared my schedule of any other obligations on this Saturday." He rose and crossed the room, retrieving a tall glass from the counter and filling it with cold water. "If you are available, we could proceed then. I would require a guide as to your planned activities, in the interest of efficiency." He placed the glass before her on the desk. Nyota stared at it, her mind a jumble.

She was too intrigued and aroused to hold on to her embarrassment at Spock's unexpected knowledge of her proclivity. And Saturday, she thought suddenly as her center throbbed, was four days away! She wanted to turn in her chair right now as he stood over her, spread her legs wide, slide her hand beneath her panties and thrum her aching clit with his eyes burning into her until she cried out in completion. Then she'd let him throw her on the desk and take her mercilessly. She almost mewled at the image. Her thighs brushed together again and she heard him breathe in deeply.

She picked up the glass and drained it, setting it down with a crisp clink.

"I can send you my plans for the day later this evening," she said, placing both hands flat on her desk to keep them from delving under her skirt. "Would that be acceptable?"

"Yes." His response was barely audible. "Thank you, Nyota."

She raised her eyes to meet his, confused by his soft statement of thanks, and saw his yearning there. He wanted this – craved this 'experiment' as much as she did. It wasn't just about her, it was about them. He had made her an exhibitionist. She had made him a voyeur.

There was the sound of movement in the hall outside his office door, someone exiting the lift. They stared at each other for another moment, then Spock looked away, walking back to his own desk.

"Perhaps it would be best for us to separate for the remainder of the day." He drew his PADD to him and began to work. "I do not have an excessive work load. You may take the rest of the day off, Cadet."

He was back to his usual professional tone. But Nyota was not hurt, because she knew what he was really saying. They needed to get space between them now; they wanted each other too badly, and were on the verge of doing something stupid, like having screaming, mind-blowing sex on every surface in this office. In a way she was relieved; she could go back to her room and alleviate the throbbing need between her legs.

"Thank you, sir." She stood and grabbed her bag and headed for the door.

"What are you thinking of?" His voice was so soft, she was sure he had not meant for her to hear. He had inexplicably spoken to himself, making verbal his own thoughts. Not a very Vulcan thing to do. She was undoing him.

She spun to look at him and thrilled at the startled look on his face at his own unchecked behavior and, she suspected, her witnessing it.

She felt a surge of boldness at his sudden look of vulnerability and strode to his desk, leaning down and planting her hands on its surface where his now lay, much like hers had been moments before.

"I'm thinking I am going to go back to my room, lock the door, strip off this uniform and take care of the needy ache you've created in my pussy that only you can elicit. I'm going to finger-fuck myself with your image in my head and your name on my lips until I lose consciousness, wishing with every fiber of my being that you were there to watch."

She was sure he had stopped breathing.

"Is that what you wanted to know, Commander Spock?"

"It is sufficient."

She gave him a lascivious smile, stood upright, then turned away and strolled out of his office, feeling his eyes on her the whole way.

The door whooshed shut behind her and Spock sat immobile, his mouth watering.