Sexually Experienced Castiel Fic Rec?
I would like some recommendations for a fic with a (preferably dark, BAMF) Castiel who has already had sex pre-series, before meeting the boys.
The only fic I know of with this premise was a Destiel one I read back in 2014, but I can't remember the name. I do remember that it delved into the ancient nature of Castiel, the wars he's fought in and activities he got up to when walking the earth in the past. It mentioned lovers he'd taken in the past. I know the fic was set (and probably written) during season 4 since his characterization was still the dark, mysterious, dangerous aura he had then. Anyway, that's the sort of thing I'm aiming for.
The pairing can be whatever, I just want a non-virgin, sexually experienced Cas. Short fic, long fic, PWP all welcome. Not really interested in AU except canon-divergent. Prefer a focus on seasons 4 and 5, but it can be beyond that.