Bones had seen the way Jim rubbed at his throat before leaving the bridge. Knowing his friend Bones assumed the injury Spock inflicted on him was paining him but he was too stubborn to ask for treatment. With this in mind he followed Jim from the bridge, intending to make him submit to treatment or at least a scan. He followed the acting captain through the ship and watched as his friend entered a utility closet, closing the door behind him.
"What in the name of Hell are you doin' Jim?" Bones muttered to himself. He approached the door and cracked it open, entirely unprepared for the sight before him. Jim was leaning against the wall with his trousers open, touching himself, while the other hand stroked and pressed on the bruises on his throat. Bones' mouth dropped open as he watched the movements of those hands, his trousers growing tighter.
Jim's movements were growing faster and Bones couldn't help himself as he reached down to palm himself through his pants. It was at that moment that Jim raised his head and locked eyes with Bones on the other side of the door. "Bones," he moaned out and licked his full lips.
Before Bones knew what he was doing he had entered and locked the door before grasping Jim's face and pulling him into a searing kiss. As their tongues battled for dominance, Bones reached down and replaced Jim's hand on his straining erection with his own. Jim broke the kiss with a gasp, leaning his head back against the wall and licking his luscious lips again.
Jim reached down and quickly relieved Bone's of his trousers and regulation underwear. He clung to Bones' shoulders as Bones took them both into his fist, movements eased by their pre come. Jim leaned forward and nipped at the lips before him before whispering, "Put your hand around my neck Bones."
Bones groaned and complied, squeezing gently then capturing Jim's lips again, almost sucking the air from his lungs. Jim's hips started bucking as his hands explored his friend's broad back and up through the silky dark hair at the nape of his neck.
Just as he was beginning to feel dizzy, gasping against Bones' mouth, Bones squeezed both hands tighter and sent Jim into a powerful orgasm, his hot release shooting and oozing onto Bones' hand and cock pushed Bones into his own shattering release. Their hips rocked together as they rode out the after shocks kissing between panting breaths, Bones' hand stroking the bruises he had made worse almost in apology.
As they leant their foreheads together, breathing into each others mouths, Bones caught Jim's eyes and smirked, "Erotic asphyxiation Jim? Really?"