God, this is one of the best smut stories I've ever read. Amazing job.

I absolutely loved this.
Castiel's emptiness, Sam's awkward way at comforting him. I'm a diehard Destiel shipper too, but latey started to get into Sassy. I love how Sam seems so nice and willing to help Cas, but on the inside he's just loving the whole thing.

This is seriously insanely good! You wrote it in such a beautiful way, and you were able to bring in only one chapter so many different sensations. Congratulations :)