Jim Kirk was a man with pride. He would never admit to something embarrassing, and was one to be in denial about things he didn't approve of, so when he started having wet dreams about his first officer pounding him into a mattress, he became very distressed.
At first he brushed it off as a onetime thing, it was hormones no doubt. He hadn't slept with anyone in months, so of course he'd be sexually frustrated, but the dreams wouldn't stop. Jim was getting tired of waking up, his sweatpants soiled with his cum.
He started avoiding Spock, which is considerably difficult since he was his first officer, meaning he worked with him every day, but he kept things strictly professional, and never stuck around for more time than he had to.
He never made eye contact with him either, fearing that he will start thinking about those eyes filled with lust as they scanned his naked body.
Jim was convinced he was going crazy.
After a particularly long meeting during which Spock stared at him curiously, Jim's pants were unbearably tight. He couldn't stand those eyes; it felt like they were piercing into his soul.
He swiftly walked to his quarters and laid on his bed, staring up at the ceiling.
He groaned as he looked down at the tent in his pants. When was this going to end?
He closed his eyes and started thinking about Spock's muscular form, his dark eyes, his deep, resounding voice.
His hand traveled down his stomach and reached his straining erection.
He started palming it with his hands and gasped at the sensation. He pushed down harder to get more friction and his hips bucked up. He took off the skin tight pants, and then his underwear, letting his hard member spring free.
He was already breathing hard in anticipation, his cheeks flushed, and his eyes glazed over with lust.
He took it in his hands and started pumping. Jim moaned.
He pumped harder, but it wasn't enough. He wanted more.
He flipped over and raised his ass in the air. He grabbed the bottle of lotion on his nightstand, and coated his fingers with the creamy substance.
He spread his legs as far as he could, and swirled his fingers around his entrance, letting out a low groan. He slowly entered the twitching hole and stretched his fingers.
He got comfortable, and started working his fingers in and out. Faster. Harder.
With his other hand he stroked his leaking member.
His breath came out in short pants as he imagined something bigger penetrating him. He wanted to feel Spock grab his waist. He wanted to hear Spock's deep voice in his ear. He wanted Spock to slam into him.
His fingers suddenly hit the bundle of nerves he was looking for, and Jim let out a startled gasp.
He hit that spot over and over again, rocking back into his fingers.
"Spock." He moaned.
He pumped harder, worked his finger faster. He panted into the pillow, his eyes closed, and with a final moan, he came, screaming Spock's name into the mattress, his cum collecting in his hand.
He collapsed onto the bed and pulled out his fingers. He felt ashamed, but relieved.
With shaky legs, he went to the bathroom, took a shower, and went to bed where he would once again, dream of his first officer.