THIS. Gah! Besides being so completely HOT, this was just an amazing read in general. Your girl!Dean is the best girl!Dean ever. I think I'm in love with Deanna. And the way that Cas is just clearly smitten with her, and she's a little smitten back, but of course she's trying to hide it, just as Dean would...*sigh*

I got into this pairing because I originally just wanted a new slash pairing, but you're making think that there's a bit more to it than that. I LOVE this.