I read this story I while ago and I'm 80% certain I have it as an ePub somewhere in my unorganized 500 fic collection on my tablet, I just can't find it.

From what I remember Dean was miserable because he felt guilty for killing Lisa who was a whore or something and maybe pregnant? Then he ended up in a church somehow (can't remember how) and Castiel was there and then he sprouts wings and passes out. When he wakes up Cas is cleaning his wings.

I know that Dean feels really confused and guilty about him getting wings because he killed Lisa. But of course Cas is there and makes him feel better and then things happen;)

Now I think Cas was a hunter but I don't know of I'm remembering another fic. They at some point end up at Pastor Jim's and Jim tries to kill Dean.

Castiel might also be an angel and they don't know but I'm really, really not sure about that.

Don't think Sam is in this but he could be.

Honestly I'm not sure if I'm remembering one fic or if I'm mixing up parts of different fics but I'm hoping it is all from one.

Thank you

EDIT: Found. Angelus Perditionis by AssButtAnonymous. Had to convert all my ePubs into RTFs (which didn't actually take that long) and bulk search them in-text using Windows Grep, very useful:)