"Keep going," Blaine commanded, his voice rough and almost as broken as Kurt's, which was ironic since Kurt was the one doing all of the work, pushing himself up and down on Blaine's cock for what felt like forever, with agonizing slowness, his hands straining against the soft rope binding them in a futile effort to escape and leverage against something, anything, to relieve his aching legs. It didn't help that every long, slow slide down Blaine's body stretched and filled him in the most perfect way, pushing him closer to the edge with every stroke, and the counterpoint of pain was destroying his concentration and making it so much harder to hold back the orgasm Blaine hadn't yet said he could have.

"It's too much," he gasped. Sweat trickled down his back and chest, but he kept moving at the slow, muscle-crushing pace Blaine had set for him. The pain in his legs just seemed to ratchet up the pressure in his balls, the need in his dick. It was all overwhelming him, running away with his self-control. "If I don't stop I'll come."

Blaine's eyes were dark and he practically leered at Kurt, like he'd never seen anything so erotic in his life. But if Kurt was expecting mercy he was disappointed.

"Don't stop. And don't come."

It was all his own fault, Kurt knew, as the muscles in his thighs screamed for rest and his rock-hard balls screamed for release. He was the one who'd asked Blaine to be strict. Harsh. Cruel, he would have said, if he hadn't been afraid Blaine would take it the wrong way.

"Please...just help me...please." Kurt's hands continued to pull against the rope that held them fast behind his back, but he never faltered in his slow, steady, up-and-down pace, torturing himself with both pleasure and pain in a loop of overwhelming sensations.

"No," Blaine said simply.

Kurt threw back his head and sobbed, a long, low sound heavy with the weight of effort and frustration. His lungs struggled to pull in enough air, his legs were trembling violently on each down-stroke, his cock stood flush against his belly, dripping precome in little surges that ran in maddening, tickling trickles over the swollen head and down his shaft each time Blaine's dick slid into him in just the right way. Tears born of pure effort escaped from his eyes and he heard himself, without really making any conscious decision, begin to mutter a litany of "Please...please...please...please..."

"You are so fucking gorgeous like this." Blaine ran his hands up Kurt's chest, thumbs dampened by Kurt's sweat teasing over his nipples with little flicks that sent new spikes of pleasure shooting along Kurt's dick and pulled tiny whimpers from his throat.

"I can't, Blaine, I have to stop..."

"If you stop only one of us is coming tonight and - spoiler alert - it's not going to be you." Blaine grinned up at him, looking almost casually relaxed, only the darkness in his eyes and the rasp in his voice giving away how turned on he was. "And if you come before I say you can, believe me you won't like the punishment."

"Why did I ever...want to do this?" Kurt lamented, still forcing his body to move up and down despite his legs' and dick's eloquent protests.

"Because me threatening to punish you turns you on so much."

"You don't have to...sound so smug about it," Kurt gasped. "Maybe I'm just...a masochist...and anyone..." Kurt's voice trailed off into senseless moaning as Blaine planted his feet and tilted his pelvis so his cock pressed even harder in the exactly perfect spot and Kurt knew he was going to come, he had to come, he could feel his balls seizing up and there was no possible way to hold back any longer.

"Freeze!" Blaine's command was loud and sudden and caught Kurt mid-rise. His hands wrapped mercifully, torturously, around Kurt's cock and balls, pulling them apart, pinching them off and forcing back the orgasm Kurt needed so desperately. Kurt would have cried out if his voice wasn't already occupied with a deep moan of effort. His whole body was shaking now, struggling to hold his halfway up/halfway down position. His knees were slipping against the damp sheets and his hands, now completely beyond his control, pulled against the rope with energy he didn't even know he still possessed.

Then finally Blaine moved again, his fingers sliding up to encircle Kurt's torso and lift, taking all of Kurt's weight in his own hands.

The unexpected release from pain and effort was overwhelming; Kurt cried out his relief and if it hadn't been for Blaine's perfect grip he would have fallen, limp, onto Blaine's chest. But Blaine was strong, so strong, and fuck if that didn't turn Kurt on even more.

For just a moment Blaine's careful air of command slipped and he beamed up at Kurt in all of his puppy dog joy. "God, you're amazing. You almost came, didn't you?"

"No thanks to you," Kurt grumbled breathlessly.

"Oh, well, excuse me. I didn't realize you wanted to come without permission..." Blaine's grip tightened and his feet shifted just a bit on the mattress then he was thrusting - so hard, so fast, that even without the added inducements of pain and effort, pleasure swelled threateningly again, flooding Kurt's belly, tormenting his still-aching balls, surging up the length of his cock. He closed his eyes and tried to conjure up anything - Rachel, Finn, Rachel and Finn - anything that might help him hold back.

Except nothing helped because Blaine was relentless, pounding in fierce pursuit of his own orgasm now, and Kurt wanted it, needed it, he didn't care about rules or punishments. He just needed to fucking come, he'd done everything Blaine had asked, had waited so long and worked so hard, and everything hurt, everything needed, and it was right there, so close and creeping closer with every snap of Blaine's hips. He opened his eyes again to find Blaine's focused on him, still laser-sharp and full of challenge.

The edges of the room were getting fuzzier and Kurt could feel himself leaning even heavier in Blaine's hands. "Please stop," he panted, his voice high and thin, "I'm gonna come."

"Isn't that what you wanted? To disobey me and force me to punish you? I'm just giving you what you want, Kurt."

Kurt could see the muscles in Blaine's arms beginning to tremble with the effort of holding him in place. He was pushing himself, now, to give Kurt this thing he needed so deeply. But ultimately it was Kurt's choice to make. To give in, let go, trust that Blaine knew what he needed and how to give it to him. And even after all this time he still struggled with it. "No," he had to push the words through his tightening throat, "I want to be good for you. I want to obey."

"Then do it." Blaine's voice was implacable, demanding compliance, and Kurt moaned, because the tone of it pushed him ever more rapidly toward that place where obeying Blaine was the only option. And as if Blaine could feel it happening his thrusting slowed, lengthened, dragging out each long, gorgeous slide into and out of Kurt's body.

"Oh, fuck, please..." The pleasure was intolerable, it was burning him from the inside out, but Kurt's voice sounded far away and indistinct in his own ears and he knew he was so close - not to coming, but to letting go.

"You'll come," Blaine whispered fiercely, "when I say you can come. I control this now, Kurt." His thrusts punctuated his words perfectly. "You do what I tell you to do. You take what I tell you to take. And you wait as long as it pleases me to make you wait." His voice was trembling with intensity by the end and that was what finally did it, pushing Kurt off that last emotional ledge. Getting a glimpse of how very, very much it all turned Blaine on.

"God...yes..." he managed before words were no longer an option and he was moaning helplessly with every stroke, floating in a cloud of pleasure and need and submission to perfect Blaine. His hands stopped pulling against the rope around them. He was bound because it pleased Blaine. He ached because it pleased Blaine. He yearned because it pleased Blaine. His overwhelming desire and complete submission were food and water and sunlight to Blaine and he offered them up freely now. No more begging, no more straining, just being whatever Blaine wanted him to be.

"Oh, yeah, that's it, Beautiful. So perfect." Blaine's hips picked up speed again and his own gasping grunts joined Kurt's moans that were tipping into cries the harder Blaine thrust.

Kurt was so close, riding the edge, craving the explosive oblivion only Blaine could give him. But Blaine had him right where he wanted him now and drew it out, stroke after stroke, holding Kurt, controlling him in every possible way. If he held out until Blaine granted him permission then he'd come because that was what Blaine wanted. If he couldn't make it, if Blaine just kept at him with these glorious, hot, perfect strokes until there was no way he could hold back any more then he would come without permission because that was what Blaine wanted. And he would be punished because that was what Blaine wanted. And if Blaine came himself, and stopped, never gave Kurt permission and never pushed him over and made him stay like this, desperate and edgy for another day, or week, or month, then he would wait because that was what Blaine wanted.

And all of that was exactly Kurt wanted.

Blaine was speeding up now, breathing harshly, his hands strong against Kurt's skin, holding him still. Each thrust was reward and punishment and Blaine's grunts became cries, harmonizing with Kurt's, which began to cant upward at the end in a kind of non-verbal begging. He tried so hard to hold back but he was losing that battle, had already lost it; for the second time his balls clenched and the pleasure peaked...

"Now!" Blaine cried, sounding almost as desperate as Kurt felt. "Come now!"

And the world exploded.

Reality disappeared; Kurt's universe was reduced to his spasming balls, his surging cock, the impossible, unimaginable pleasure forcing through his body and beating against his skin from the inside like a prisoner desperate to escape. He couldn't see or hear; he had no idea if he was coming silently or screaming loud enough to wake the dead; he didn't know if Blaine had come as well or was still thrusting into his wracked, insensate body. The only thing he was aware of besides raw, tearing sensation was the rope tight around his wrists, and the feel of it, the fact of his bondage, just pushed him higher.

Eventually the impossible intensity peaked and began to ebb, and Kurt slowly descended back into his body to find himself lying prone against Blaine's heaving chest. Blaine must have come because Kurt's ass was empty and twinged with a gentle, perfect ache. He was probably heavy on Blaine, some corner of his brain warned him, but movement was impossible. Even if he hadn't been still floating in post-orgasmic bliss he was sure none of his limbs would be obeying him for a very long time.

Blaine's movement under him became more rhythmic and Kurt realized dimly that he was laughing. "Oh my God, that was amazing."

Kurt managed to open his eyes to find Blaine's so close and sparkling with emotion. He pulled his lips upward just a bit at the corners, just to show Blaine he was okay, then let his eyes slip closed again, happy to keep drifting.

Blaine's fingers stroked down his arms to the rope around his wrists. "Do you want this off?" he whispered.

"Mmm-mmm." Kurt shook his head against Blaine's chest. He almost always chose to stay bound through his afterglow. He loved how vulnerable it made him feel as Blaine kissed and petted him and eased him back to earth.

So Blaine kissed, and petted, and at some point managed to clean them up a bit, and held Kurt, humming softly in his ear, until the world began to solidify again, the gentle fog in his brain started to lift, and the itch of the sweat drying on his body became too intense to ignore. Blaine sensed the moment Kurt began to squirm and made quick work of the knots around his wrists but Kurt's first act, when his hands were free, was to pull Blaine's head closer and kiss him thoroughly. He never could find words adequate enough to express how grateful he was to Blaine for giving him this.

"You're welcome," Blaine smiled when they finally parted. He stroked gentle fingers over Kurt's cheek bone. "You really were perfect, you know. I never thought you'd last that long. I came so hard."

Kurt snuggled into Blaine's chest, rubbing his lips against the hair there. "I bet I came harder," he said.

"Well I hope you enjoyed it," Blaine said, "because it was the last one for a while."

Kurt's head jerked up and he did his best, under the circumstances, to glare. Blaine just smiled as if Kurt was the cutest thing he'd ever seen. "Well you did tell me to push you," he said, all innocence and accommodation. But then his eyes narrowed and gave his innocent smile a tinge of evil. "This was just the appetizer."

If the half-hearted throb from his completely spent cock was any indication, Kurt was in some serious trouble.