AN: I combined two prompts - 'depraved' and 'sex in a bathroom' and this is what I came up with. Warnings for oral sex, infidelity, mention of Blaine and Klaine, not Blaine or Klaine friendly, and a little Kurt bitter resentment tossed in. Future fic. Angst. AU.

The bathroom stall shook with the force of Sebastian shoving Kurt up against the wall. Kurt gasped, startled for just a second. Then, his lips curled into a devilish grin. Kurt crashed their lips together, not so much kissing as devouring Sebastian's mouth in the process.

"God," Kurt moaned, snaking needy hands underneath Sebastian's shirt, "it's been so long…"

"Well," Sebastian said, his voice muffled against Kurt's neck, his hands fumbling with the zipper to Kurt's jeans, "if you went to a real college like NYU…"

"Ah!" Kurt slapped Sebastian on the shoulder. "You take that back!"

"If you went to NYU," Sebastian continued, undeterred, "we could do this all the time…in the dorm rooms…in the showers…"

"On your knees, Smythe," Kurt commanded, pushing on Sebastian's shoulders. "Payment for insulting my school."

"Why is it always me on my knees?" Sebastian asked, moving quickly down Kurt's body.

"Because my jeans cost three hundred dollars…" Kurt watched Sebastian drop to his knees, his wicked grin growing wider, "…and besides, I have a feeling you're used to this."

Sebastian had an urge to bite Kurt's cock for that comment, but thought of something better.

"So, have you and Blaine been comparing notes about my sexual prowess?" he joked.

A sharp kick to the shin wiped the smirk off his face.

"What the fuck, princess?" Sebastian hissed.

"Don't ever make a comment like that again," Kurt growled.

"Fine." Sebastian stood, brushing off his knees. "You know, you don't have to be in here with me. In fact, I can just leave."

"No…no, wait," Kurt pleaded, grabbing Sebastian's shoulder before he could turn to leave. "That's not…"

Sebastian looked down at Kurt with piercing green eyes. Kurt grabbed the collar of Sebastian's shirt, smoothing imaginary wrinkles.

"What you and I do…" Kurt started, "…it's just for us."

Kurt pulled Sebastian close.

"I just want something that my perfect boyfriend doesn't get to have," he whispered, voice colored with deep feelings of bitterness.

Sebastian smiled, inching closer to Kurt's lips until they almost touched.

"Don't worry, gorgeous. Dapper Dan's never had me, and he never will."

Sebastian kissed Kurt, this time slowly, gently rutting against Kurt's still exposed cock.

"Never's a long time," Kurt muttered. "And you're not necessarily the loyal type."

"Eh," Sebastian said, returning to the spot on the floor. "Fair enough, but there's hotter pieces of ass all over this city. At list I'll shove his to the bottom of the list."

Kurt opened his mouth to comment, but moaned instead when Sebastian wrapped his lips around him and slid down his length.

"Oh, God…" Kurt groaned, threading his fingers in Sebastian hair and pulling frantically, his whole body shivering every time Sebastian swallowed him completely.

"Do you like that, sweetheart?" Sebastian murmured, pulling off for a moment to gaze up at Kurt's wrecked face. "Are you going to cum?"

Kurt shoved Sebastian's face back into his crotch, filling his mouth again with his aching cock.

"Stop talking, stop talking, stop talking…" Kurt chanted, his hips pounding into Sebastian's mouth, forcing his cock down Sebastian's throat.

Words turned into gibberish, and then into silent, choked grunts as Kurt came down Sebastian's throat.

"Jesus Christ! You are way too good at that." Kurt shoved his softening cock back into too tight jeans and struggling to pull up the zipper.

"Well, practice makes perfect." Sebastian stood, wiping his mouth with the back of his hand.

Kurt reached a hand out to open the stall door, but Sebastian grabbed him by the wrist.

"Hey, now," Sebastian said, closing in on Kurt with his Cheshire cat grin, "turn-about is fair play."

"I'll walk you out to your car later and you can bend me over the back seat." Kurt pulled out of Sebastian's grasp. "They'll come looking for me if I'm in here too long."

Kurt washed his hands and straightened his ensemble in front of the mirror while Sebastian rinsed out his mouth. Sebastian grabbed a paper towel and dried his face.

"Shall we?" Kurt said, gesturing toward the bathroom door.

"Let's."

Sebastian followed Kurt out of the bathroom and into the bar, stopping at an occupied table over by the dance floor.

"Hey, guys!" Kurt sang as he approached his friends. "Rachel, Santana…Blaine, honey. Look who I ran into in the bathroom!"