Thank you! In my Wincest, the deep connection between the two is what drives them exploring beyond just "regular" sex (in my kinkier stories). It's exactly that "I'd let the gates of Hell stay open for you, Sammy" or "I'd literally jump into the pits of Hell for you, Dean" that's pure 100% canon which I use in their sexual interactions to fuel all sorts of kinky sex. But that sex becomes sacred, no matter how full of pink panties or sex toys it might get.

And here, yes... it's a grounding point for Sam and a necessity for Dean. I love how you phrased that. Thank you.