"Neither of them have ever exactly been rhetoricians, but over the years, they've created their own particular brand of esoteric language, communicated in glances, touches, and a lot of stares. It's weird. But it's their thing. It's his thing with Cas." Episode Tag to 11x03 The Bad Seed

Castiel had said that an artist is nothing without his canvas. In that, Dean heard a blessing of his absolution.

'Don't get too close, it's dark inside. It's where my demons hide, it's where my demons hide.' Those four lines describe Dean perfectly. He's got so many demons weighing him down, hidden deep in his soul, and one only needs to look into his eyes to see that. Castiel doesn't care. He wants to help. But before he can do so, Dean needs to let him. Based on the song by Imagine Dragons.

It's been dark in their home, lately. blind!Cas

Throughout the ages, the years, the centuries, the strange love they shared persevered, not only in life, but also through stories, stories, tales, legends, and myths.

"In the end what makes it happen is the bitter taste of jealousy in Dean's mouth, the one that you can't wash away with beer easily. That kind of jealousy that makes it hard to think straight and clenches your throat, making everything hard to swallow."

When Dean and Sam Winchester are dead, only their angelic lovers will remain, the two brothers will never fade.

Do you believe in miracles?

He wishes she'd hold on even tighter than that. Wishes he could feel her nails dig deep in his skin. That she'd leave behind evidence of her very life. Spoilers for 5x01. Caryl.

This isn't a rescue mission, and Dean just has one thing left to say.

Cas taught Dean everything he knows about the stars.

An alternative version of the "I'm sorry, Cas" scene in 9x10. (Warning for 9x10 spoilers)

Castiel always wished to attend a concert, strict family or not. (Teenagers / high school AU, song inspired)

Demon!Dean meets Leviathan!Castiel. (Rated M for heavy violent smut, WARNINGS inside)

AU: what if ghosts, demons and monsters were only in Castiel's mind? (WARNINGS inside, please read them)

Dean can't really return the favor, but he can do the next best thing. Dean/2014!Cas, set during 5.04. Mentions of drug use.