For once, Kurt didnt care about their neighbors.

Hed come home after being away for five weeks – five entire weeks, the longest amount of time theyd ever spent apart – studying textiles in Italy. Hed taken two steps into the apartment when Blaine ran up and threw himself at him, latching onto his neck and sucking with abandon, and Kurt promptly let out a moan that was loud enough to be heard by 3F, 3H, and possibly (okay, probably) 3E and 3I.

They kissed and groped and groped and kissed, tongues twisting and teeth clashing, pulling off their shirts and fumbling with their zippers on a zigzag path toward their bedroom. Blaine was naked first – he always seemed to win that race – and he jumped onto the bed, breathing hard as he hungrily watched Kurt strip off the last of his clothing.

"Missed you."

"Wanna taste you," Kurt said low, and Blaine let out a whimper.

"Yes. Fuck, yes."

Kurt climbed onto the bed, bracing his arms on either side of Blaine and hovering over him. His eyes glinted as he blew out a slow breath, ghosting over Blaines torso, then stomach, then lower–

Then he stopped, and stared.

"Kurt, please, please, dont tease–"

Theyd been apart for five weeks. Thirty-five days, and Kurt knew from experience just how fast Blaines skin healed. And besides, he remembered every mark he ever left on his boyfriend, if just because of how exciting it still felt to mark him.

And there, on the inside of Blaines upper thigh, was a very fresh, very new hickey.

He felt faint; the world was teetering and tottering and nothing was stable anymore. Theyd been boyfriends for three years, and living together in New York City for the past year, and sharing long talks about love today and marriage tomorrow and kids down the road and now... and now someone elses mouth had been on Blaine.

"Please, baby, please–"

"Blaine." Kurt closed his eyes briefly, gathering his strength. "What is that?"

"Whats what?" Blaine looked down, following Kurts line of vision, and froze. "Oh, shit."

"Blaine?"

"Just dont look at it." He grabbed a handful of sheets, covering up the hickey from view. "Okay, go ahead."

"Go ahead?" The hurt was quickly giving way to pure, unbridled Hummel Fury. "Go ahead with what, dare I ask?"

"Tasting...?" Blaine trailed off. "Oh, come on, Kurt, dont judge."

"Dont judge?"

"You were gone for five weeks! I havent gone five weeks without having sex with you since I was a junior in high school!"

Kurt was seething now. "And what, I have?"

"No, obviously, no... but... I mean, five weeks."

"Yeah. Five weeks for me too." Five weeks of being hit on by Giovanni, and Carlo, and most of the gay and bisexual guys hed met on his program. Five weeks of steadfastly declining their invitations without a second thought. "You know how I dealt with it? I jerked myself off every night, and sometimes in the morning too. Thats what normal people in committed relationships do to release tension when they have to be apart."

Blaines eyes flashed an objection. "Thats not fair."

"Not fair?"

"Jerking off wasnt enough for me. You know how much I love it when you bite me and–"

"Stop," Kurt said firmly, gritting his teeth as images swam across his brain. Who had Blaine turned to, when his own hand had failed to satisfy his needs? Whose teeth and tongue had pulled and teased in just the way that Blaine loved best? "I dont understand this."

"What dont you understand?"

"How could you even do that, Blaine?" he asked helplessly. "Its not like you."

"Ive always been kind of loose... well, looser than you, anyway. You knew that about me."

Kurt felt his mouth drop open. "You mean this has happened before?"

"Um..." Blaine smiled weakly. "Not often?"

"Not often," he repeated flatly.

"Well, I mean, this is the first time its happened since weve been in New York. It was mostly way back when we first started dating. We went so slow at the beginning – and I was fine with that, really, I wanted to wait until you were ready... but I needed to get off, and... yeah."

Kurts eyes widened. "So wait, that was when you were at Dalton?"

Blaine nodded, his cheeks a miserable shade of red.

That meant it had been someone Kurt had known there – someone hed probably been friends with – Wes, maybe, or Thad, or... He put his head in his hands, still reeling, and felt Blaines palm touch his shoulder tentatively.

"I honestly wouldnt have done it if Id known it would upset you," Blaine said softly. "I promise it wont happen again, if thats what you want."

Kurt lifted his head incredulously. "You didnt know it would upset me? Are you serious?"

"I... I dont know. I just figured it was understood that if we were separated, wed get off however we wanted. It wouldnt bother me if youd done it." Blaines eyes darkened. "Actually, I think thatd be kind of hot."

"Ill pass."

"You know I was imagining that you were the one doing it to me, right?" Blaines lips touched the back of his neck, and Kurt flinched, pulling away.

"Is that supposed to make me feel better?" He studied his boyfriends face, looking for the signs that he had missed, all these years, that Blaine was capable of this sort of betrayal. "You know what? Screw it, I want the details."

"What?"

"I want to know exactly how it happened." Nothing, he knew, could possibly come close to what he was already imagining in his head. At least with the details, he could figure out whether he would ever be able to forgive Blaine.

Blaines eyes searched his, and finally he nodded. "Okay. Well, it was last night. I was lying here–"

"In our bed?"

"Kurt, just let me–" He took a deep breath and continued. "I was thinking about how you were coming back in less than twenty-four hours, and how I hadnt really gotten myself off since you left. I mean, Id tried, but jerking off kind of pales in comparison to your hands and mouth on me, and I couldnt ever seem to get myself to come."

Kurt moved away from him, inching toward the foot of the bed and watching somberly as Blaine stretched himself out on his back.

"I was stroking myself, like... well, like this." Blaine began to pull at his shaft with long, slow strokes. "I was imagining that it was you, but whenever you give me a handjob, you always suck on my thigh at the same time..." He shoved a pillow under his neck and raised his legs, back back back, over his head until his toes curled around the top of the headboard. "And then I just–" He leaned his head forward, sucking and biting at the inside of his own thigh, moaning as his hand moved faster, and his mouth sucked harder–

"Stop." Kurt couldnt breathe, couldnt think, couldnt do anything but pull down Blaines legs and affix his own mouth to the hickey-in-progress, sucking and biting and crying just a little bit with relief, and Blaine was moaning loud enough to wake the dead, and–

And yeah, for once, Kurt didnt give a shit about their neighbors.