Chapter Text
Jim tore off his shirt, slipped out of his pants and ran towards the edge of the lake. Dressed in nothing but his regulation black briefs, he jumped into the cool water, creating a flurry of ripples around himself.
“Come on, Spock!” he called out to his fully-clothed first officer, who stood a safe distance away, scanning some local flora with his tricorder. “It’s shore leave! Surely you can put the tricorder down for an hour or two?”
Spock looked up, cautiously approaching the edge of the lake. Jim waded there to meet him, peering up with pleading eyes.
“You may enjoy yourself, Captain,” Spock said. “I have already joined you once today.”
A pang of rejection flared up in Jim’s chest. He shouldn’t have pushed it because what else was he expecting?
Together with Bones, the three of them had hiked to a small lagoon in the morning. Jim had convinced them both to join him for a swim. He thought Spock had fun. Maybe he was just good at pretending?
“Oh,” Jim heard himself say. Suddenly he didn’t want to be in the water anymore. But leaving now would tell Spock something was wrong. “That’s fine, Mr Spock. It’s your shore leave too.”
With that, the captain returned to the deeper part of the lake, back turned to his first officer. If he had turned around, he would have seen the longing expression grace the Vulcan’s face before too turned away.
Some time passed, with Spock scanning and documenting plant life, and Jim alternating between floating and swimming. The water was so clear he could see his feet all the way down!
Somewhere towards the middle of the lake, where it became too deep to stand, Jim caught a glimpse of something shiny. He dived down to get a better look and perhaps bring it up to the surface with him. Holding his breath, he tried to dig out whatever it was. But whatever it was, it was too big to pull out in one go.
He drifted up to the surface, taking in a breath of fresh air before making another attempt. By his third attempt he was beginning to feel dizzy. He had no choice but to lay on his back and float on the surface, eyes shut.
His constant motion seemed to have caught Spock’s attention, because soon enough he heard himself call out.
“Captain, is everything alright?”
Jim remained floating like a starfish and yelled back, “Yeah, I’m fine.”
There was a beat of silence before Spock asked, “Is there something unusual in the water?”
Jim, whose ears were filled with water, was really struggling to make sense of Spock’s garbled words. Lifting himself up, he went back to treading water. “What did you say?”
“I asked if there was something unusual in the water. My scans reveal it to be a standard freshwater lake.”
“Nothing bad,” Jim replied, approaching the edge again. “I think I found a huge gemstone in the lake bed. It’s so big I can’t get it out on my own, though.”
Spock glanced between Jim and the water. Jim wanted to ask him again, but he couldn’t do that to himself. He was not a desperate man.
“I would offer my assistance,” Spock began, but he looked down at his trousers. “But…”
“But?” Jim asked.
“I…” a slight green flush danced across Spock’s cheeks. “I removed my… underwear after our previous swim.”
Jim’s eyebrows shot up into his hairline. Spock had spent half the day following him around with no underwear?
His cock twitched.
“I do not find the sensation of wet fabric against my skin particularly appealing,” Spock explained quickly. “I understand that it is unprofessional—“
“It’s fine,” Jim cut him off. Spock didn’t seem to process this immediately because he kept explaining.
“—but the dampness, whether it be socks or underwear or anything, is not—“ he stopped, realising Jim said it was okay.
“I’m gonna go try to get it out again. If you… if you do decide to come in, I promise I won’t look.”
Jim turned and swam back to where the gemstone lay half uncovered, heart hammering. He couldn’t believe he’d just said that to Spock. What did he even mean by ‘I won’t look’? The water was so clear he’d probably see everything even if he wasn’t trying to!
Spock, meanwhile, watched Jim try four more times, none of them successful. On the fifth, he emerged panting.
“It’s bigger than my whole hand!” he called out to Spock.
By the time Jim went down for his sixth attempt, Spock had made up his mind. Clearly, his captain wanted the gemstone, and Spock, with his Vulcan strength, would be better suited to extracting it from the lake bed. He could put up with the slight discomfort of being viewed naked by his commanding officer for a few minutes… couldn’t he?
While Jim was underwater, he quickly peeled off his clothes and waded in, reaching waist depth before Jim resurfaced. The captain opened his mouth to say something, but looked over to where Spock had folded his clothes by the shore, noting his pants were there under his shirt. Neither of them said what they were thinking.
Spock swam over to Jim, who eagerly pointed out the work he’d done to uncover the stone.
“Allow me, Captain,” Spock said, preparing to dive down.
Before Jim could say a word, the top half of Spock’s body jumped out of the water, arching down in the shape of a dive. His hands slipped underwater, then his head and his shoulders, followed by his back, and—
Jim turned away. He’d only seen a tiny glimpse of the cleft between his ass cheeks, but that was enough to get his cock perked up. Looking down into the water, he watched Spock’s strong thighs work to propel him down, but he stopped himself from looking any further. Instead he tilted his head up to watch the clouds swirling in the sky. Seconds later, Spock emerged before him.
“Captain, I’ve dug out the remainder of the gemstone. From its appearance, I believe it is quartz, or at least something similar.”
Jim opened his mouth to speak, but couldn’t find the words. The afternoon sun hit Spock’s face, casting it in a warm glow. His eyes, which were usually dark enough to be almost black, were shining honey brown. From this close, he could see the darker flecks, giving his irises depth.
Jim was not a sap. He found people beautiful, told them so, and sometimes things evolved into more. Despite what Bones alleged, he did not have crushes, or go about his days mooning over unreachable Vulcans.
But the water droplets trailing down Spock’s cheeks, highlighting the sharp cut of his bones… god.
“Captain? Are you alright?” Spock asked.
“Yes!” Jim replied a little too fast. “Yes of course, just thinking about the quartz.”
“I cannot confirm whether it is truly quartz until I have my tricorder,” Spock added.
“Right.”
Jim found himself wondering what kind of waterproof lipstick Spock used. He hadn’t seen many that could retain such a pretty pink colour even when eating and swimming and talking all day.
“I will retrieve it and take it to shore.”
Jim nodded, turning away fast enough this time that he didn’t accidentally see something that wasn’t meant for him.
Once again, Spock emerged, this time immediately swimming to the shore. His legs kicked up water, but his arms remained underneath, probably carrying the treasure. Jim followed a few metres behind, watching as Spock switched from swimming to walking, the water level dropping lower and lower against his body.
It revealed his strong shoulders, then the muscles of his back, and the curve of his spine. God, Jim would have given up his left kidney in that moment to have a chance to run his finger down that line.
Illogical, he imagined what Spock would say to such a suggestion.
And then the water slipped further down, revealing the cleft, and Jim had to turn away. At this point, his cock was hard and it seemed like there was no calming it down. Not for a while, at least.
“Are you coming, Jim?” Spock asked from somewhere behind him.
“I… uh… the water’s so nice, I don’t wanna leave just yet,” he said pathetically. There was no way he would step out and show Spock the tent in his briefs.
“The temperature is indeed in a pleasant range,” the Vulcan replied. “Now that I am wet, I shall join you.”
No, Jim squeezed his eyes shut. His cock throbbed with glee, undeterred by the prospect of an awkward conversation with Spock about human biology.
“Captain?” Spock said, now right behind him.
Jim turned, keeping his eyes up on Spock’s face.
“Are you alright?” he raised his brow somewhere under his wet fringe.
“Yeah, why wouldn’t I be?” Jim managed to say. His voice came out a little breathless, eyes flickering down to the notch between Spock’s collarbones.
Spock followed his gaze, curious. And then looked further down.
To Jim’s horror, he must have noticed the very thing he was hoping he wouldn’t.
“It appears you are…”
“It’s a physiological reaction,” Jim said quickly.
“I am aware.”
“Good.”
They looked at each other, Jim’s cheeks burning with humiliation. Spock’s dark eyes were unreadable. Was he disgusted? Curious? Uncomfortable? There was no telling.
“May I ask what the cause is?” Spock asked, rather scientifically. He added, “Of your physiological reaction.”
“I… uh…” Jim’s hand was at the back of his neck, scratching an area that wasn’t itchy.
“Cool water usually has the effect of depleting an erection, not causing one,” Spock continued.
Jim coughed at how blatant the question was.
“I…”
“Jim,” Spock’s voice lowered and he stepped closer. “Is my lack of clothing the cause of your arousal?”
The captain sucked in a breath. His heart threw itself against his ribcage. Now was his chance. Everything he’d been dreaming of, night after night. It could all come true here, on this small planet, in the glow of the afternoon sun.
“What?” Jim blurted out, followed by a sheepish laugh. “No, of course not.”
The corners of Spock’s lips tightened and he stepped back again. The green flush returned to his cheeks.
“I apologise, Captain. I do not know why I said that. It is best if I leave.” He made to walk out of the lake.
Jim remained frozen for a second, watching Spock walk away, the water receding to his waist, then his hips, then his ass.
“Wait!” Jim leapt from where he stood, flopping into the water and grabbing onto Spock’s wrist. The Vulcan stopped in his tracks. Slowly, he turned, his dripping wet sheath level with Jim’s eyes.
The captain’s mouth watered.
Droplets of lake water dripped from the curly dark hairs that covered the slit underneath. He wanted to push them aside and bury his tongue inside Spock’s wet heat.
He looked up at Spock.
“I lied,” he said, chest rising and falling unevenly. “You… you were the cause of my arousal.”
Spock raised his perfect brow, looking down at him. The corner of his mouth quirked up. “I thought so.”
Jim heard himself laugh, and he moved his hand from Spock’s wrist to his thigh, the other one coming out of the water to do the same.
“You’re beautiful, Spock,” he said, glancing between his face and his sheath. “I know I say that a lot, about a lot of people, but… you’re something else.”
Spock’s hand reached out to push Jim’s wet hair out of his eyes. He didn’t say anything, waiting to see where the captain would take it.
“I’ve wanted you,” Jim continued. “For so long. And I thought I’d convinced myself that you… you were never going to feel the same.”
“You did not ask,” Spock said.
Jim shook his head, water flying off the tips of his hair. “And risk getting rejected? Risk our friendship?”
Spock’s thumb rubbed a circle into Jim’s temple, the human’s eyes fluttering shut so he could lean into the touch with complete focus.
“Can I… can I taste you?” Jim asked, voice so quiet it was almost carried away with the breeze.
Spock didn’t reply immediately. But after a moment of deliberation, and a quick survey of their surroundings, he decided they were sufficiently isolated to avoid being discovered.
“Yes.”
Jim crept forward, still kneeling on the sandy lake bed. The water lapped at his shoulders and at Spock’s thighs. Parting his legs, he made space for Jim to swim between them to look up at his sheath.
The captain’s soft lips brushed against the wet skin of his hairy thighs, warm breath followed by a tender kiss. Slowly, the kisses rose higher and higher until they reached the crease of his groin.
Spock sighed, suddenly realising there was nothing to brace himself against. His toes curled in the sand, rooting him to the spot in anticipation of Jim’s tongue. But first came the fingers.
Jim parted his hairy folds, revealing the sticky wetness that had pooled between them. Some of it gathered into a larger drop and began to dangle from Spock’s sheath. Jim opened his mouth, offering his tongue to catch it. It landed, and he lapped it up like a man dying of thirst.
He’d planned to take his time—to savour every inch of Spock’s skin and leave the sheath till last—but now that he’d tasted what awaited him, he couldn’t do it. Hooking his arms around the Vulcan’s thighs, he lifted his face to meet the outer folds.
Jim took a deep breath, inhaling the scent of the man he’d spent years fantasising about. Spock’s musk invaded his nostrils and travelled straight to his brain, piercing him like an arrow. There was no going back now.
He kissed one of the folds, then the other, then parted them with his tongue. Immediately, he was enveloped in the wet warmth of the sheath, tongue engulfed in more of Spock’s slick. He gulped it down, lifting himself higher.
The Vulcan’s thighs clenched as Jim finally pressed his whole mouth to his opening. His lips latched on and he sucked, eliciting the most delightful hum of appreciation from the man above him. He dived in deeper, exploring as far as he could with his tongue.
“Jim—“ Spock tried to warn him, but he was too late.
The tip of Jim’s tongue made contact with Spock’s lok, forcing the Vulcan’s hips to jerk forward. Spock groaned and curled his toes deeper into the sand, trying not to lose his balance as his knees buckled.
Jim, for his part, was relentless. He continued teasing the tip of the lok, arousing it to full hardness and drawing it forward. As it emerged, Jim pulled back, mesmerised by the long, thick staff. His own cock throbbed, sending him a reminder that he was also hard. So the captain got to work, sucking at the lok and palming himself through his briefs.
He was heady on Spock’s scent and taste, swallowing down every drop he was given. His own cock leaked underwater.
“J-Jim…” Spock stuttered, unable to get the necessary words out.
Suddenly, two thin tentacle-like structures squeezed their way out alongside the lok, dragging their slimy bodies over the captain’s cheeks. Something stirred inside him, a warmth in his mind that wasn’t there a moment ago.
“Jim—my fra’ls—they seek a—oh—“ Spock’s sentence broke off into a whine when Jim ran his tongue over the slit of his lok. Nonetheless, he persisted, trying to warn the man below him. “The fra’ls seek a tele—“
Jim got the gist of what he was saying, and found himself practically ready to cum at the idea of melding minds with Spock at this moment. If it did happen, he was certain he would only last a few seconds.
Just then, having mapped out the shape of his face, the fra’ls arranged themselves at his psi points, initiating the link. Above him, Spock cried out, likely feeling the same intense pleasure Jim felt in that moment.
Briefly, they were one. Jim was himself, but he was also Spock, standing above his own body being licked by his own tongue. The sensation was so indescribably intense that Jim lasted a solid 2.09 seconds. He knew, because Spock knew.
And then he was cumming in his briefs, in the water of a lake on a foreign planet. And above him, Spock’s lok pulsed, releasing spurts of cum down Jim’s throat.
The fra’ls slithered away, breaking the mind meld. All the was left was Jim’s mouth, wrapped around Spock’s lok. He didn’t want to move, but he had no choice. They couldn’t remain this way forever. So he pulled back, letting the lok retreat as well, leaving only Spock’s quivering sheath.
The Vulcan stepped—or more accurately, stumbled—back, giving Jim some space to stand.
“Spock…” the captain murmured, still in a daze.
Before Spock could reply, Jim’s communicator chirped. And whatever they’d had in those few precious moments was over.