When Kurt awoke it was to the sound of Blaine shuffling around their room. He checked the clock and saw he had abour 40 minutes until he had to be ready. Blaine was apparently just getting up to shower and soon closed himself in the bathroom. Kurt stretched and got up to pick out some clothes for after his own shower, before remembering that he now wore a uniform. He wasn't particularly happy about that fact, but it was worth it to not have to deal with Karofsky and slushies.
He was started from his thoughts by the Bathroom door opening. His breath caught in his throat as Blaine walked out. He was wearing his uniform pants, but only a thin undershirt covered his chest, which Kurt could see was muscular and defined. There was water running down his neck and jawline and catching into the undershirt making Kurt just want to lick it all up. Kurt just stared with his mouth open. He took in Blaine's muscular arms and strong shoulders, his strong jaw, smooth shaven and still with water droplets running along it. He examined Blaine's chest and the muscle lines he could just makeout through his thin undershirt along with the nipple that clearly showed through.
Kurt didn't think about how long he'd been staring until he heard Blaine say "uhh.. Kurt?".
He snapped back to reality then and closed his gaping mouth. He realized his heart was beating quickly and his mouth was dry. He also realized that his pajama pants had become much too tight in the front and started to blush, realizing that, if he looked, Blaine would be able to tell that Kurt was hard.
Kurt mumbled something about taking his shower now, desperate to get away from Blaine before he realized where Kurt's thoughts had been.
Once in the Bathroom with the door safely shut Kurt closed his eyes and took a few deep breaths. He then walked over to the shower and started the water, stripped his clothes off and got in. He was resisting the urge to touch himself because he didn't think it'd be right to get off on his roomate, who was most likely strait anyways, but when he tipped his head bad and felt the water running down his body he couldn't help but think of Blaine like that. He started to think of Blaine without the undershirt, or any clothes for that matter, standing in the shower with the water running down his lightly muscled body.
His cock was so hard and neglected that he couldn't help it anymore. He ran his hand down his body and loosly rapped his hand around his cock fisting it slowly. He let his back fall against the shower wall and ran his other hand over his chest, pinching and teasing his nipples and imagining it was Blaine doing it. He imagined Blaine kissing him and their tongues intertwining and then Blaine kissing down his neck, sucking lightly in spots, until he came to a nipple, licking and teasing it lightly before taking it into his mouth and sucking. Kurt moaned and twisted the hardened nub a little harder. He thought of Blaine fisting his cock, instead of his own hand doing it and sped up his hand, tightening it and letting out breathy moans almost constantly now. He started twisting and flicking his wrist more often now and putting pressure on the vein on the underside causing him to moan louder still. The thoughts of Blaine along with his own ministrations soon sent him over the edge. He came, letting out the loudest moan yet and coming across his hand, then sinking to the shower floor.
After a few minutes of recovering his breathing was mostly under control again and he quickly stood up and finished up his shower.