deancasbigbang:

Title: Growing Pain
Author: darkheartinthesky
Artist: Ddff0111
Rating: Teen
Pairings: Dean/Castiel
Wordcount: 26000
Warnings/Tags: Spoilers through Season 11, No Major Archive Warnings Apply, mentions of bodily fluids/functions, Human Castiel, Light Angst, Angst with a Happy Ending, Sam Winchester’s POV, Oblivious Sam
Posting: 10/29/2018

Summary:

After Castiel is de-aged into a baby by a witch, Sam notices something… odd about Dean. He’s never seen Dean like this before; so gentle, so caring, so worried. And it makes him think, and reflect, on Dean and Castiel’s relationship.

There’s got to be something he’s missing, something he doesn’t understand, but he just can’t quite put his finger on it.

---

It was never ending. There was always something Cas needed. It made Sam think about Dean. Dean took care of him like this while he was still just a child himself.

Sam turned the water off. Thinking about all that Dean did for him as a child made his stomach twist into hot, heavy knots. He turned the light off before he left the bathroom and quietly padded back to bed, desperate to catch even just another half hour more of sleep. But he stopped briefly and stared at the crib. He hadn’t heard Cas cry at all since before bed.

The crib was empty.

Panic blossomed in Sam’s chest, ready to rip at his throat, but it died down in an instant when he turned to scream at Dean and saw—

Saw Dean on his back, mouth open and snoring obnoxiously, and Cas on his chest. Dean had one arm wrapped loosely over Cas, securing him in place, and Cas slowly rose and fell with Dean’s breathing. Cas had two fingers stuck into his mouth. His hair was sticking up in all directions, like he’d been given an electric shock. He looked the most peaceful he’d been since this whole fiasco started.

Probably more peaceful than Sam had ever seen him, actually.

After taking the image in, Sam sighed and smiled. He grabbed his phone off the nightstand, and making sure the flash was off, snapped a couple of photos for blackmail later; but he’d be lying if he didn’t admit that they were adorable like that.

Sam crawled back under the covers of his bed and faced Dean and Cas. He was never going to let Dean live this down.