Blaine was too mortified to speak, but he grudgingly made his way back over to the bed and sat. He immediately winced a bit, then reshuffled himself, half leaning on and half lying on the bed. He studiously avoided Rachel's gaze.

"Not to be rude, Rachel… but you really should knock first." he said, quietly. Kurt grunted at that. What a mess.

"You guys, I'm really sorry!" Rachel whined, her voice rising.

"Shhh…." Kurt hushed. "Finn's going to hear you now." He realized the door was half ajar still and rushed to close it.

"God. Please don't tell Finn about this Rachel!" Blaine begged.

"Of—of course not." Rachel stuttered.

"He's downstairs still?" Kurt asked.

"Puck called. They're strategizing about Saturday's game. We figured your dad was going to be home soon—"

"Yeah." Kurt nodded and turned the music back down. It was annoying hearing it play in the background of an embarrassing disaster. He kept his voice low.

"Look. Blaine's right. This is… uncomfortable. But I know enough not to barge into Finn's room when you're over. You're not the only people with a sex life around here…"
"Oh my God." Blaine breathed.

"Blaine. It's fine."

"It's not."

"Well. It will be."
"Blaine. Honest. I won't tell Finn or- or anyone else. It's no one's business, really, and I'm really sorry I walked in while you- were being…" Rachel faltered. She wasn't entirely sure what she had walked in on.

"Punished." Blaine admitted, his voice low.

"Punished?" Rachel questioned, unsure.

Kurt cleared his throat. "If you must know, we have an… arrangement. It's all consensual though—" he hastened to add.

Blaine nodded, glancing up.

"It is?" Rachel squeaked. "I mean—of – of course, I assumed, you two wouldn't… Look, it's not really my business-"
"No. It's not." Kurt stated simply. "But we're not ashamed. We're just… private about this." He reached over and touched his boyfriend's shoulder, comforting and reassuring him quietly as he spoke. "Sometimes he gets punished. The old fashioned way."

Rachel nodded, processing this. "So it's a roleplaying thing?"

Kurt sighed, looking at Blaine. There was a quiet moment where they looked at each other, seeming to silently negotiate what to reveal. "Not really. It's not what we do when we're being intimate, if you must know. Blaine just likes having… structure in his life. I keep him accountable sometimes. Like with schoolwork and things like that."

"You spank him."

"Yes. Well. Sometimes." Kurt's heart welled seeing Blaine's embarrassment. "Just when he needs it." He added, thinking that made it sound better and realizing too late it really didn't.

Blaine rolled his eyes in spite of himself. This would go quicker if he just bit the bullet and laid it on the table, he decided. "Kurt just… didn't like that Sam and I kind of scuffled in Glee today." He volunteered, brave. Saying the words aloud brought back the shame Blaine had been feeling about failing to behave appropriately. He wished he could go back in time and change it. "I know it probably sounds… weird, or whatever. But we made this agreement that I, uh… can expect to be in trouble with Kurt for things like that." He glanced at his boyfriend, who nodded.

Rachel swallowed. "I see. I just—Finn and I don't- I've never met anyone who…"

"Yeah Rachel, like I said. It's… an us thing. And… I guess it could happen again in the future, so…. Seriously, please knock, okay? "

"Of course! Honest, it'll never happen again. And y-your secret's safe with me."

"Thanks." Blaine said quietly.

"I know it looked like I was… hurting him, and - I sort of was, I guess—but it's not, it's not anything you have to worry about." Kurt stammered. Blaine nodded, ready for this conversation to be over.

"…Okay."

Kurt looked to the door. "…Finn's probably wondering what's taking you so long."

"Right. Okay. Well. Thanks for clearing that up for me."

"No problem." Kurt said, awkward.

Rachel backed out of the room, bursting with the desire to share what she'd seen and not knowing quite how she was supposed to keep something this scandalous a secret. She hadn't gotten a spanking since she was a very little girl, it was hard to imagine Blaine volunteering for one at his age. But she'd seen it with her own eyes. Blaine must be so embarrassed! She didn't know how to make it up to him, but she was determined to come up with a way.