A/N: Written for the Klaine Advent Drabble Prompt 2014 'ache'. Warning for bondage and minor anxiety.

"Are you ever going to get tired of me?" Blaine asked.

Kurt thought for a second that Blaine's question was a sign of impending exhaustion – a passive-aggressive plea for Kurt to please hurry up and give him release before he passed out - and Kurt laughed. He glanced down at Blaine expecting a grin, but Blaine looked up with wide, anxious eyes at his dom, quietly imploring him for an answer. Kurt gazed back at Blaine, at his beautiful sub locked beneath his body on the chair where he sat, hands cuffed behind his back, three piece suit of Kurt's own design peeled carefully from his frame and hanging loosely off his shoulders, fly of his pants open wide, giving Kurt access to the only part of Blaine's body that Kurt needed.

Blaine was normally a little chatty during sex. As his dom, Kurt usually didn't allow it, awarding multiple punishments for every infraction. But in times like this, when the lines that defined their relationship blurred and they were lovers as well as Dom and sub, Kurt bent the rules. As these pseudo-sessions went on – as Kurt worked out his frustrations from the day using Blaine's body, or when Blaine needed more love than discipline - Blaine would ramble, praising Kurt, moaning gratuitously, becoming less than coherent, the delicious sounds of him coming undone spurring Kurt on. But this was an unusual enough question to make Kurt pause, stopping his movements, settling in Blaine's lap and looking deep into his sub's eyes, searching for the origin of his self-doubt.

"What makes you ask that, my love?" Kurt asked, panting slightly, looping his arms around Blaine's neck and rutting slowly to keep from losing his erection.

"I…" Blaine's eyes darted back and forth, as if the words he was searching for were racing around the room and his eyes were trying to catch them, "it's just that…your life was so different before we met…as a dom, I mean…"

"A-ha," Kurt agreed, bending forward to plant light, airy kisses up the length of Blaine's neck. Not to distract him. On the contrary, to keep him focused on the slow simmer of Kurt's body and what he desperately wanted to get back to.

"You had so many subs," Blaine continued, closing his eyes and swallowing, his Adam's Apple bobbing against Kurt's lips as Kurt kept him close.

"Yes, I did," Kurt said matter-of-factly.

Blaine nodded, just a little so as not to move too far from Kurt's mouth.

"And now you have me," Blaine sighed. "Only me."

Kurt raised his eyes and his lips from Blaine's neck and stared at him – his cheeks flushed and his lips swollen sinfully but looking so much like an insecure boy that it squeezed at Kurt's heart and made his chest sore.

"Do you miss it?" Blaine asked in a fading voice.

Kurt felt Blaine's breath on his lips and he longed to kiss his doubts away, but Blaine deserved better than misdirection. He deserved an answer.

"Sometimes," Kurt replied honestly. Blaine nodded, and his eyes drifted away from Kurt's face, finding a spot on the floor to stare at instead. Kurt wouldn't allow Blaine to hide his eyes. He ducked to catch Blaine's gaze. "But not because I miss my subs or that lifestyle," Kurt said, his voice firm so that Blaine understood, "but because some of them were my friends. That's all." Kurt watched Blaine's eyes focus, and then unfocus, and Kurt grunted a bit in frustration. He grabbed Blaine's face in his hands and pulled Blaine's eyes back up to meet his. "What you and I have is different," Kurt said. "What you and I have goes beyond all of that. I don't need any other subs in my life, Blaine. All I need is you."

It was true. Kurt didn't just desire Blaine. Kurt had to admit that in his life as a dom, he had desired one or two men, and it was definitely easy to desire Blaine. No, Kurt needed Blaine - needed his love, needed his loyalty, and his submission.

Kurt had read some cheesy BDSM fiction in the past that had likened a dom's need to have a sub as a sort of physical condition, that if left unfulfilled could result in an illness that made a dom weak. It had made him roll his eyes. A lot of it, he couldn't even finish. But being with Blaine, suddenly all of those horribly written novels made a bit more sense. Sure he had gotten a rush dominating other men. Once he got the hang of it, once he unlocked the person he truly was with it, it became sort of addicting, job or no.

Being Blaine's dom was more than a job, more than a rush. Kurt's body ached to dominate his lover - every cell reached out for Blaine. Blaine had become like oxygen to Kurt, to a point that it was almost painful for Kurt not to dominate him. When they went too long between sessions – even sessions like this – Kurt began to feel cold inside.

He needed Blaine's body beneath him to keep him warm, to make him feel alive.

Kurt had many, many things and people in his life to be thankful for, but Blaine was a singular blessing.

Kurt looked into Blaine's eyes – shimmering, melting from their normal tepid whiskey color to rings of liquid gold as they stared back at Kurt.

"No, my love," Kurt whispered, leaning forward to speak the words against Blaine's lips, to imprint them into is skin, "you're underneath my skin, you're in my blood. I'm never going to get tired of you."