Disclaimer: I still don't own anything. I make no money from this work.

A/N: Yeah, I know you don't want to hear why it has been so long. Special thanks to TeaOli, Scribe and Aqua for the feedback on my incoherent ramblings. This chapter has not been beta'd, all the errors and stuff that just doesn't make any sense are all my fault. So sorry I was still editing here at fan fics site.

The Experiment

Part X

"Spock, I don't think I can wait until we get to the embassy."

"Nyota, you won't have to."

Spock led Nyota into the hallway where Varik stood in silence waiting to take her to the shuttle as he'd been instructed. Spock nodded his approval as he released his hold on Nyota's arm, contemplating with curiosity the increasing physical pain it caused him each time he was forced to let her go. He wanted to kiss her mouth with slow, deliberate strokes and experience her taste blending with his own on her tongue. Instead he turned to make his way back to the Gallery's main hall and commence with the obligatory leave-taking that was required of him, making a mental note to consume the first alcoholic beverage offered him to mask the scent of Nyota's liquefied need on his breath; Ambassador Kal would not hesitate to comment on it.

With ever step he took away from Nyota, Spock worked to combat the sensation of discomfort growing in his chest with the knowledge that even in his worst case estimation, getting cornered by Commodore Mitchell while trying to bid him a goodnight, they would only be separated for a matter of minutes. Varik, the man Sareth had sent to aid him was bonded and therefore Spock reasoned a safe escort for Nyota. He knew the Vulcan's mate was most certainly nearby; Varik would never have agreed to what Spock had proposed otherwise.

But then Spock discerned a new scent on the air, or more accurately one that had been obscured by the stronger scent of Nyota and his train of thought splintered. Biologically encoded latent senses, no longer considered necessary and hence unused, sprang to life within him and he felt rather than saw Varik draw near Nyota. Something indefinable twisted uncomfortably inside him and his efficient steps faltered. He inhaled deeply, indentifying the distinct aroma and his muscles bunched and flexed beneath his skin. Spock's mind was suddenly overcome with a single thought that resounded deafeningly through him: Varik was male, Varik was aroused, and he was currently drawing himself closer to his Nyota. Too close! Spock halted abruptly, his fists intuitively coiling dangerously as he spun on his heel and pinned his fellow Vulcan—now at Nyota's side—with a look saturated in venom and the weighty possibility of impending violence.

"Step away from her." The words were spoken without inflection, the lack of emotionalism making them all the more menacing.

Nyota went stock-still at Spock's words, the portal to the room behind her remaining open as she lingered in the entryway with a startled, slightly perplexed expression on her face. The relaxed, orgasm-induced aura that had enveloped Spock moments before was gone, and she was at a total loss as to what had occurred to strip it away. He had obviously changed his mind about leaving her with Varik that much was crystal clear. She felt a twinge of shame at the thrill his lack of control gave her, that it wasn't so easy for Spock to leave her behind. She bit her lip to keep from smiling. Her wait was going to be even shorter than what Spock had planned. She swallowed reflexively.

Varik blinked in response to the command that had been issued to him and took a measured step back, folding his arms behind his back as he did so. He could sense Miss Nyota's confusion but he didn't look at her. He knew better now than to provoke Spock, however unintentional said provocation was. He'd intended to ask if Spock's mate needed assistance—she'd swayed unsteadily where she stood when the Commander had turned from her; his action, a simple attempt to comply with Spock's request for him to escort her with all due care. But his planned assistance had been misinterpreted. The Commander's behavior was illogical, but Varik understood its origins and considered the Vulcan/Human hybrid's conduct under the circumstances, though extremely irrational, to be far more Vulcan, than Human.

Sareth had explained to Varik when he dispatched him to be of service to the Starfleet officer that, after his careful observation of Spock, it was evident the youth was failing to comprehend the near-gravitational pull that was coming to bear on his being as his mind and katra established and strengthened his connection to the one he'd selected to be his wife. Spock had chosen the human female—now once again at his side—and his less than logical ancestral heritage was beginning to assert itself with an unprecedented force.

What Spock was experiencing now was as it should have been for him in his teen years with the mate selected for him by his parents, that bond apparently not having manifested and developed from its inception as was common amongst his people. The elder Vulcan was indeed prudent to arrange immediate haven at the embassy after scrutinizing Sarek of Vulcan's son—his need was great and his control, though impressive, was flagging. Varik rebuked himself, realizing he should not have agreed to escort Miss Nyota alone, but instead insisted Spock forgo the pleasantries expected at the social function so he and his Nyota could leave together.

Varik sympathized with the situation that Spock, in his inexperience, had placed himself in—unwisely thinking he could so easily leave Nyota in the care of another while his blood was up. And Varik was burning with need. He would never leave T'Ryn to be watched over by another male, regardless of whether they were bonded or not, while knowing the man to be as achingly erect as he currently was, especially if her body—like Nyota's—was trembling and ripe with desire. He was familiar with the untenable position of a Vulcan males control in relation to a perceived threat to their desired mate, innately grasping how their weakness would be particularly acute if the intended was not fully secured. Spock undoubtedly was not ignorant of Varik's aroused state which had, more than likely, been the cause of his sudden agitated reaction.

Had Spock smelled his body's need? Varik contemplated the possibility while trying to remain benign and motionless under Spock's glare. Nyota's scent was enticing and potent; Varik didn't think it possible to scent anything over the intoxicating perfume her body was producing. But he had seen documentation of instances— outside of Pon Farr when it was expected—in which the heightened senses that were needed in Pre-Surakian Vulcans for survival re-emerged in their descendants without explanation. Had the absence of a traditional bond with the one he desired as a mate caused Spock's senses to intensify where she was concerned to equip him to defend his position with her?

Fascinating.

Varik hypothesized that Spock's human heritage must be what had enabled him to pull himself away from Nyota and delay coupling. If he were fully Vulcan, the three of them would all be in the storage room still; Spock easily recovering from Nyota's initial attentions, steadily stroking his manhood inside of her. Varik's lok twitched with the thought, quietly begging to be relieved.

Xxx

Nyota's mind was attempting to sift through the haze of lust she'd been awash in all night and allow her to completely grasp the significance of the moment she was now in. Spock was needlessly facing off with another Vulcan over her. For every step Varik had retreated from her position Spock had stepped forward until she was again within arm's reach of him. Both men looked perfectly calm but the tension in the air was palpable, Spock's focus on Varik's person intense and unwavering while he extended his hand toward her. His response earlier in the week to her mention of sleeping wrapped in one of Jim Kirk shirts was absolutely nothing compared to this show of territorialism.

She looked down at her left hand when she felt the back of Spock's fingers glide over her own; the warm digits brushed slowly down then back up again twice before they swept into a brief embrace of her fingertips and then onward to press into her palm. The display, especially when compared to all that Varik had already witnessed between them this evening, should have felt innocent—except it didn't feel innocent at all; it felt intensely intimate and private, bizarrely more so than what had transpired under and upon that desk. What had happened in the storage room had felt like a fantasy; a scene to be played.

But they were no longer in the secluded storage room, they were back in the real world, in a very public hallway and Spock was touching her…no he was petting her. Without conscious thought, she brought her right hand up and grazed the skin of her shoulder where he'd bitten her while she studied him, drawing Spock's eyes to her as she caressed the myriad of marks he'd left there. She stared back at him, watching as his eyes dilated and dropped to where the pads of her fingers slid to and fro against his mark. A heated current ran up her spine.

Oh no…

It was going to happen again.

Nyota blinked slowly and bit the inside of her bottom lip. There wasn't a finger or a tongue or a cock anywhere near the vicinity of her sex but she was going to going to climax. She could feel her abdomen tightening; feel the beginnings of that exquisite, tingling pull within.

'Spock is fucking me his eyes, looking like he's about to mount me while Varik watches…of course I'm about to come,' she thought darkly as she started to quake uncontrollably. As the first wave of her orgasm swept through her, Nyota gasped and then pressed her lips tightly together in an attempt to be quiet, her hand automatically gripping Spock's.

Spock groaned as he seized hold of her. "Yes, Nyota…" he whispered in breathless elation as he pressed his forehead to hers, "do not fight it."

"Oh fuck, Spock…"

"Can you feel my want inside you?" He murmured as their bodies met roughly with the edge of the open door behind her. His knees wanted to buckle, to drop him at her feet so he could push his tongue into the flowing river of her desire.

Nyota wondered suddenly if they had both gone mad as another wave of pleasure washed over her. They were risking reputations, promising careers for…what? Sex?

No…this was more…

"Infinitely more than I will ever be able to sufficiently verbalize or display."

She shuddered as the guarded words of his love for her came unbidden and she whimpered and bit into Spock's uniform clad shoulder as her climax continued to ebb and flow. "Gods…so good." She mumbled against him. His cock hardened against her belly.

"Bite down harder...ashayam." Spock rasped as he began to taste her ear. "Please…make the mark deep."

Deep…

Go deeper, Nyota…there is more… so much more here. Don't miss it.

Spock had come to her. In a room filled his people, his peers and his superiors, he'd sought her out. And when his Commanding officer had stopped him in his pursuit of her…he'd come to her still. She thought about the heady words he'd whispered against her lips mere hours ago in his office as she trembled in his ever tightening embrace. She thought about how he'd asked her to permanently seal what had been inscribed upon her back. She thought about what he'd told Varik…Spock had told Varik…

'…But it does not involve that person seeing or touching my future bondmate…'

His…his future…

Oh gods…

A second orgasm crested, taking her unbelievably higher and Nyota sobbed Spock's name. She suddenly felt dizzy and was thankful Spock was holding her as she strained against him while she struggled to draw breath—there was no way she could stand without him. She opened her eyes and met Varik's tumultuous and slightly intoxicated gaze over Spock's shoulder. A tiny moan escaped her with the new knowledge that the Vulcan had watched what had just occurred.

She broke from Varik's stare to take in their surroundings. How in the world had this hallway stayed empty of other people? Or had they been seen and the person, like Varik, had watched in silence? Reality came crashing down around her. They needed to get their asses to the shuttle. She was about to say as much to Spock when what he'd told Varik came to her again. She needed to hear it and Spock, if she was correct, needed to hear it from Varik's lips.

"Varik?"

"Yes, Miss Nyota?" he murmured quietly.

Nyota could feel Spock's lips brushing repeatedly over his bite on her shoulder. She realized she had no idea what to say, how to ask.

"What…who…" She tipped her head back against the wall Spock still had her pressed against, frustrated at her total lack of ability to communicate in the moment. Spock lifted his head from her shoulder and she met his eyes. "What am I…to you I mean."

'Brilliantly put, Nyota.' She thought. She felt like a complete idiot.

Spock's steady gaze became indescribably tender as he continued to meet her stare, raising a hand from her hip to touch her face. Varik broke the surrounding silence, replying as if she had still been addressing her question to him, "You are Lt. Nyota Uhura of Earth, Starfleet cadet. Cherished betrothed and intended bondmate of Xtmprsqzntwlfb"

Nyota's eyes widened as Spock's formal Vulcan name rolled smoothly off Varik's tongue. Shit. She was going to have to practice for ages if she was going to be able to pronounce that during the wedding ceremony, talented tongue or no. She took a shaky breath, her eyes resolutely fixed on Spock as she asked almost inaudibly, "Is he…? Am I your…your future…?"

"Yes." Spock cut in to her babbling before she could finish.

"Bondmate?"

"I believe to say you are my future is sufficient, Nyota."

"I'm your future wife?"

"Nyota, you are my future everything."

'Fuck waiting,' she thought resolutely. Spock didn't need to kiss ass and say good-bye to anyone. She leaned into him and breathed against his lips, "Do not go from me, Sa-telsu."

When Nyota whispered, 'Husband', Spock's pupils became impossibly larger, the rich brown of his irises becoming a tiny shimmering rim circling a sea of hungry darkness as his control over his need for her completely evaporated.

Neither Spock nor Nyota had heard Varik make arrangements earlier with Sareth to have the hall they were in blocked off ensuring they would not be discovered. Regardless of the provision, Varik knew they could not continue to remain in the open area without risking exposure. And he wanted to release his seed, now leaking from the head of his lok, inside of the warm pleasure of T'Ryn body, not in his trousers.

"Kroykah!"

Spock's hand stilled where he'd been preparing to release Nyota's breast from the confines of her dress and into his salivating mouth, but Nyota continued in her efforts to tug him back into the storage room.

"The shuttle, Spock. Sareth will do what is necessary to explain your absence if questions arise. Take your ko-kugalsu to the shuttle now."

Xxx

Captain Pike stepped from the room he'd entered with Cadet Gaila and Lucutius Ta into a quiet, empty hallway. He looked at the door that the Commander and Cadet Uhura had disappered behind and wondered if they were still inside...viewing the art. He glanced around and saw two impressively large Vulcan's hovering at the end of the hall, neither of whom looked to be the man who'd approached Spock earlier. Pike had the sudden impression that a talk with Sareth of Vulcan was in order. He needed to get his story straight, before any of the Starfleet brass started to ask him where their distinguished Vulcan officer had gotten off to. Then he needed a stiff drink.

Ta's little diversionary tour had, much to his surprise, been interesting. However it was clear the Orion had their fair gentlemen guide marked for consumption. When the sexual tension had started to give Chris the early stirrings of an itch that was going to need a good, hard scratch, he knew he needed to bid the Orion and their escort adieu.

The announcement of his departure brought forth such a dazzling, honest to goodness disappointed pout from the cadet that Pike couldn't help himself and laughed aloud. Her undisguised discontent at failing to secure him as well as the Ephesian for the evening stroked his ego thoroughly and as payment he graced her with a boyish, lop-sided grin he hadn't seen fit to employ in ages as he looked down at her and said, "Sorry, Cadet."

She had no idea how sorry he really was. But after the scene his 'unemotional' Vulcan friend had almost caused tonight Chris was certain an entanglement with a cadet, however brief and promising in pleasure it was, was not something he wanted to engage in.

Pike had heard clothing being shucked to the floor as he'd approached the corner that would lead him back to the entrance of the room. As he rounded the corner he made the mistake of looking back to where he'd left the pair. The Ephesian's manhood was being coaxed from the inverted, lightly furred pouch that protected his genitals, while the man sucked leisurely on the heavy breasts Gaila had bared to him. The cadet glanced up catching his eye and motioned with a nod of her head for him to return to join in, but Pike knew better, even if he was terriblycurious as to how everything was going to fit together. Just as he was about to exit he heard Gaila gasp and then mutter, "Ahh…oh fuck, yes" as Ta emitted a low chuckle and Pike deduced however it fit, it did so nicely.

Xxx

Varik entered the shuttle to find T'Ryn sitting quietly in the pilot's chair. She rose to her feet, allowing him to slide—she noted very carefully—into the vacated seat. In response to his questioning look she simply said, "I did not want to wait." She punched the controls to close the hatch doors behind Spock and Nyota after they too had boarded. Her gaze did not linger on the couple but returned to her husband as he rapidly completed the normal flight check and got the craft underway. She didn't need to access their bond to be cognizant of his need for her—the tenting of his robes where he sat displayed his longing for her quite well.

Varik looked to T'Ryn as she lowered herself to the deck of the ship beside him and began to pull at his clothing. The small vessel would reach Vulcan's embassy from the Legion of Honor in a matter of minutes.

"I wish to try something. Will you delay our return to the embassy and circle the city?"

He turned to the shuttles console to adjust its heading.

Xxx

Spock began to pull off his instructors jacket before the doors to the shuttle had closed. He ordered Nyota to sit, dropping the jacket beside her as he lowered himself in front of her before he continued on with the removal of his shirt. When that too rested beside her on the long bench-seat where she reclined he paused and examined where she had bit him. He closed his eyes and caressed the small indentations her teeth had left in his flesh. Nyota abandoned her seat to slide into Spock's lap and nuzzled into his neck briefly before she parted her lips and bit him on the edge of his collar bone. Spock pulled her into such a fierce embrace, the air whooshed from her and she groaned.

"Higher, Nyota" He said with a gasp, loosening his hold when he realized it was too much for her. "Mark me where it will be seen…where is cannot be concealed."

Nyota bit and sucked her way up his neck, giddy with the knowledge that come Monday her claim on him would still be unashamedly evident. He wanted others to see. His peers: her fellow cadets: they wouldn't know he was hers specifically, but they'd know he was taken…they'd know he'd spent his week-end getting thoroughly fucked. She imagined him bluntly stating—when he was invariably asked, 'What the hell, Commander?'—that the marks were made by his ko-kugalsu while they were engaged in sexual congress. Speaking of which…

She nestled her nose against his ear and began tugging at the lower half of her gown. Spock lifted her, his hands firmly holding onto her hips so she could free the portion of her skirt trapped beneath her. Once free of the gauzy material she reached for the fastening of Spock's pants, wondering why they had yet to arrive at the Embassy. She froze when she heard the unmistakable sounds of sex coming from the front of the shuttle. Nyota paused and tipped sideways slowly to look over Spock's shoulder.

"She who is Varik's wife was present when we entered the shuttle." Spock whispered into her ear once he realized she'd finally noticed the couple in the front of the craft. "She requested that we circle the city before we retire to the embassy."

Nyota looked at him as her eyes widened in disbelief and she stifled a wildly inappropriate giggle. First she'd corrupted Spock, then together they'd sullied the random Vulcan chosen to spirit Spock to the Embassy before he threw her on a table in the middle of a Federation meet-and-greet and shamed all of Vulcan—or brought them a new level of stature, depending on one's point of view—by fucking her into the floor. And now Mr. Random, aka Varik, had pulled his wife into the fray. Nyota didn't know whether to feel like she was a sexual liberator or a bringer of ruin.

Spock completely ignored her apparent distress, lazily working a hand between them as he studied her face with amusement. He found her center and dipped two fingers into her sex, pulling them free after a few deep thrusts into her core that made her moan and then brought them to his mouth to suck while she released a low frustrated whine for more. Her face communicated both lust and utter astonishment at his seemingly relaxed exploration of her. She leaned back, giving him easier access to her insatiable sex as she braced her upper back and shoulders against the lower half of the bench she'd been sitting on. Spock's hand disappeared between her thighs again as a muffled moan came from the front of the cabin. Her inner muscles tightened around his fingers and her eyes met Spock's as he raised an eyebrow at her. Her body had given up a fresh flood of moisture with the moan from T'Ryn. Nyota hearing the others, knowing they were so close and could hear her and him as well, was increasing her arousal…and Spock knew it. He slid the hand that he was currently using to knead her hip to the small of her back to support her body better. They stared at each other as his hand became more vigorous in its attentions. He watched as she closed her eyes and let the sounds of Varik and T'Ryn's coupling mingle with the sound of his soft pants and allowed her third orgasm of the evening to take her.