Despite being ready for the unexpected, Jim still lets out a sound of surprise when something's put over his eyes, though he doesn't so much as tense or flinch. He knows it's Spock, after all, and when he leans in and kisses him, he easily returns it, the contact breaking when a hand slides down and cups his bulge, a shaky moan spilling from his lips.

It's both a blessing and a torture, the way Spock touches him. He should've known he'd do this, but still when that hand stills Jim all but cries out in frustration, his hips bucking hard as his hands cling to Spock's shoulders. The tone in his voice spills like molten gold into him, making him burn from the inside out, and Jim feels like hearing him alone would be enough to push him over the edge at this point.

"Yes," he mewls out, his head tipping back and his whole body jolting and arching when the hand moves again. Then stops. Fuck, Spock's gonna drive him mad— and he's going to let him. "Ropes. Use the ropes. Tie me down."

A brief pause, as he sucks in a breath at the hand sliding underneath his shirt and the teeth digging into his shoulder. "Please... sir."