Wolf on wolf

Part 12

(NSFW/ smut):
Dean's instinct as an omega kicked in, "yes..." he wound his arms around the angel's neck, pulling him down into a sweet kiss.
The scent spilling from his alpha was so thick and arousing, Dean couldn't help but let out a little whimper.
Dean gasped when he felt the tip of Castiel's cock against his opening. Feel it slowly open him up as the head slid in.
Castiel waited a couple of seconds before slowly pushing the rest of his length until the base of the knot into Dean. As Dean got used to the feeling of being full, Castiel slowly pulled back, then slowly pushing back in. He kept a slow rhythm, pumping into Dean. Dean in exchange, wrapped his legs around the angel's hips.
He gasped when the tip of Castiel's cock hit his prostate, fireworks of pleasure making him shiver. Castiel noticed this, making a point of thrusting into that spot.
Their breaths where ragged, Dean couldn't tell whose was whose anymore. Their scents where mixed together with sweat and arousal, Dean couldn't tell what was what, too focused on the pleasure.
Castiel slowly pushed the huge knot inside Dean before climaxing. Dean followed shortly after.
The angel collapsed on top of the Winchester, both breathing heavily.
"Whoa," Dean panted, kissing Castiel on the forehead.
Castiel slid off Dean, blue eyes looking worried, "I didn't hurt you, right?"
"No, I'm great," Dean flashed his bright smile. And he was great. This was what he never knew he wanted until this point. He didn't mind being an omega if it meant being together with Castiel like this. They cuddled, holding hands till Dean feel asleep, Castiel watching over him.