Dean wasn't stupid. He could see how they looked and touched one another- those glances and soft touches looking far more intimate than close friendship- and he knew they were something more. And the thought alone hurt more than he could imagine. Sastiel/Sassy/Samcas (however you'd like to call it) one-shot.
Supernatural - Rated: K+ - English - Family/Romance - Chapters: 1 - Words: 591 - Reviews: 1 - Favs: 11 - Follows: 3 - Published: 7/31/2013 - Sam W., Dean W., Castiel - Complete