Chapter Text
Dean received the text during one of the most boring meetings of his career. It read simply 'dean, I need you'. Which told him all he really needed to know. His omega was in heat.
Without wasting a second he stood up and walked out the boardroom with not even a backward glance. He was confident that his boss would understand the call of a mate and if he didn't well fuck him.
Dean wasted no time in getting to his impala and driving to his apartment, breaking the speed limit about 90% of the way there. Impatiently, he ran to their floor and quickly unlocked the door.
The smell hit him as soon as he stepped in and it was like he'd drank 50 shots in quick succession. The smell was completely intoxicating and it momentarily stunned dean as he just stood and drank it in. This was without a doubt the most beautiful smell in the world, sweet and heady and fertile. His cock was already hardening.
A barely sounded Dean from the bedroom shook Dean from the scent haze and he remembered just what was waiting for him and his feet began to carry him to Cas.
Upon entering the bedroom he was greeted by an incredibly sexy sight. His mate was completely naked and sweaty, thrusting down on the fingers buried in his slick ass as he moaned and thrashed on the bed, lost in his heat. As he caught sight of Dean he let out a loaded groan and threw himself off the bed and into him, attacking his mouth as his hands went straight to his belt and began to remove his pants.
"Dean. I need...I need your cock in my ass now. Knot me Dean"
By this time he was completely hard and he pushed Cas off him and onto the bed, positioning him on his hands and knees, his already stretched ass presented and waiting as he removed the rest of his clothes and then stalked towards his mate, who was trembling with anticipation.
"Is this what you need baby?" Dean teased as he slowly stroked himself to the sight, walking ever closer.
"Yes Dean. Fuck me!" Cas wailed as Dean stood right behind him and slowly began rubbing his cock between Cas's ass cheeks, his natural lubricant slicking up Dean's cock in preparation.
When Dean felt he couldn't wait any longer, he lined up the head with Cas's perfect hole and slowly sunk in and he felt Cas relax under him as his alpha started to fuck him like he wanted. Like he needed.
Once he was balls deep, he mounted Cas and began to thrust into his ass hard and fast, each time causing the headboard to slam into the wall and Cas to grunt as his ass was thoroughly abused.
A litany of curses began to escape Cas as he became nothing but a mess of sensations and pleasure, Dean nailing his prostate on every thrust.
The wanton beauty of Cas was only furthering Deans arousal and he felt his knot already beginning to swell and catch on the rim of Cas's ass as it tried to enter. Each time the size of it caught in Cas he breathed out a yes until finally it was big enough and Dean's knot was finally seated in Castiel.
Immediately Cas was coming all over himself and the bed sheet below, a howl ripping from his throat from the intensity of his orgasm, feeling Dean's thick, long length and impressive knot completely encased inside him.
Dean watched his mate as he went boneless and sated and with a few shallow movements of his hips, he was flooding Cas's fucked out ass with his come.
When he'd emptied himself entirely, he collapsed on the bed drained and happy and situated himself against Cas's back and wrapping his arms around him tight, his knot still joining them together. He pressed a loving kiss to his neck before they both drifted off to sleep before round two began.
***
A few months later Dean received the same text whilst he was at work but he knew this time it wasn't his heat that Cas needed his help with. It was the pregnancy hormones that had turned Cas perpetually horny. Of course Dean didn't mind helping out with this new development either. In fact, he found he rather liked it. And that's why he was leaving right this minute. He didn't want to keep Cas waiting after all.