I hope you meant what you said about constructive criticism. The good thing is that I only noticed 2 minor problems. The first is when Cas pops in & tells Dean to stop the car. Instead of "trader," it should have been "traitor." The 2nd is that you should have ended the chapter there, then started Ch.2 with Dean being yanked from the car. Build the suspense a bit. Other than that, it seems like an interesting story, which I will be happy to follow. :-)

Oh my god more romance but besides that I think its great !