After a minute of coy teasing, Castiel pushed Dean onto his back and climbed on top of him, working his hips in a way that made Dean writhe. They'd been experimenting, but nothing like the actual penetration sex Cas had learned from Martius. He thought maybe it was time to break out the big guns. Dean was pretty hook-line-and-sinker'd at this point – he might even really want to. And Cas needed it. He needed it badly. He bit Dean's tongue and his lips and made him beg for something, anything, while giving him nothing.
Cas released Dean - who was panting - to sit up and pull his shirt over his head. His chest flexed and curved, and Dean traced the happy trail on his stomach with delicate fingertips. Cas let the shirt fall off the bed. Then he put his hands on the bed on either side of Dean and flexed as he leaned back down. His lips hovered over Dean's, watching as Dean's eyes and hands roved his bare chest. Snaring his mouth again, Cas trailed his fingers along the inner thigh of Dean's jeans, making him wiggle and feeling his ticklish grin against his lips. It bubbled a grin to his own lips.
He slid his hand to coax Dean's hard-on. Gentle, infuriatingly teasing him, Cas drew back from his hip bucking until Dean realized he was being teased. Then he settled into it. Cas began to leave a trail of kisses down his neck; the beautiful arch of his shoulder to his neck was all he could reach, his thick t-shirt getting in the way. He tugged at the collar with one finger. As if in response, Dean let Cas lift it up over his head, and it fell on top of Cas's on the carpet. The motion made Dean's entire face bright with lust. Running his hands along Dean's soft abs, and his chest, and his sides as his entire torso filled and emptied with coarse breath, Cas sank into his mouth as a strong tide does, drawing him out into the strong current.
When Castiel reached down his own boxers and began to fondle himself he felt Dean's sexual frustration mounting. His dick was so desperately stiff against his stomach. His hand gave some relief, rubbing its base and releasing some thumping jerks. Dean grew increasingly desperate. The soft moans Cas added while he worked himself did not help. "Come on," Dean grunted, his own dick throbbing behind the button of his own underwear. "Cas..." He added with a soft whine as he bit Castiel's lip gently.
"Wait," Castiel whispered, getting himself to a certain point before he released a breath and looked up. "Are you ready?" He asked, looking at Dean with dilated blue eyes, and Dean hesitated. Then it clicked. Cas watched the realization bloom in his eyes.
"Yeah," Dean replied, swallowing. "Top or…?"
Castiel nodded, using his free hand to cup Dean's face as he gazed into it, rubbing his cheek with one thumb. The confidence he instilled in Dean helped ease his nerves. "We're going to lube you up first," he explained, "so it goes in easy. I'll buy a bottle if you feel we need it, but if we can manage without, it's up to you." He smiled mischievously. "But personally, this is my favorite part."
Dean lay back, his whole body vibrating with anticipation for the pleasure to come. Cas pushed his boxers down until he kicked them off. His fingers closed softly around the base of Dean's boner, and began to blow him gently. The soft groans of pleasure were very rewarding. Cas gave him a little extra suck for his patience before being satisfied with his coating. Then he reached up and kissed Dean warmly, working off his boxers. Then he got on his hands and knees.
Dean was harder than ever now. He rose to his knees behind Cas, heart hammering, and put his hands on the pale hips. "Damn," he breathed, enjoying the view. "You got a nice ass, I hate to bash it." That made them both giggle a bit. Dean gripped Cas's waist, and both of them flushed with a pressing heat that made both of them twitch down below. "Here goes nothing," whispered Dean.
Slowly, a bit clumsily at first, Dean began to slide his way in. It was so foreign that it messed with him - but he was way too horny to stop trying. The natural lube was just enough, but each gentle push made Cas ache for more. He pumped his hips softly to ease things along more. It was working. Little by little Dean sank in further; every shiver of his cock was felt like a horny tease inside Castiel. Both of them had been on edge, and it was melting away. A surprised moan shook itself out of Dean's chest as he went in pretty deep. Then, suddenly, he was in up to the hilt. The pleasure that washed over them was mutual. Cas felt all his muscles contract tensely and loosen almost at once with it and he groaned weakly. He hadn't felt someone like this in so long. It was like feeding an old drug addiction. He nursed it, begged for it, and he got what he wanted. Dean's hesitation seem to vanish. He began to pull out and push back in, over and over, gasping at the tightness, and Cas dipped his head as he took it in. His gasps came gravelly and rough. Dean pumped him harder and harder until he was afraid of being too rough, which was just where Cas wanted him. Their moans mixed and mingled until only Cas's voice breaking separated them.
Castiel leaned on one arm and reached down to work himself as Dean hammered him. His head swam with blood rushing to his cheeks and his cock at the same time, his heart pulsating loudly in his ears. The rush and lust bucked him and made him soak it all up; it didn't matter that Dean had never done this before, his past experience with sex was perfect. He was receptive to all Cas's twitches and moans, knowing how to hitch his breath and how to make him cry out.
After what seemed like an endless stream of wordless communication on how to push each other to the brink, Cas felt the tightness of pre-come shudders in his pelvis. Behind him, Dean was putting his hips into it, so it was obvious he was feeling it, too. Their panting even synced up. With a few more loose jerks Cas felt the prick of orgasm. It magnetized his attention and made him beg until he would have done anything to finish himself. At the same time Dean's pumps became softer, the roll of his moan echoing Cas's. Castiel's hand tightened around his cock the exact moment Dean began to thrust madly - and suddenly both of them were bucking with climax. Their mouths opened in silent cries. Rainbows of color exploded behind their eyes and spread from their cocks to their entire bodies. They stretched involuntarily and pushed into it with a lip-biting need; they rode it out hard and fast in order to squeeze every last drop of desire-slick cum out.
The twitch of Dean's cock grew stronger and stronger the more he eased off his rough ride. He'd emptied everything into Castiel. Cas had blown his load over his fingers and the sheets and felt like he was going to collapse from ecstasy. Dean pulled out, slowly, with one last gasp, his dick soft but still jerking gently.
He melted into the sheets in exhaustion, curling up on his side. Cas, bunching up the soaked sheet and tossing it aside, did the same, facing him. They let their jarred bones settle. Reaching out clumsy hands, they twined fingers and legs as well, pressing their foreheads together as they tried to rest. Their exhales and inhales mixed.
Then, they lifted their eyes to see the other, and gravitated together. Their lips meshed and slid over each other. An after-sluice draped over them. Heat reverberated off their satisfied genitals as they lazily snogged. Both were too drunk on relief – sexual and otherwise – to do much else.