I remember this story being unfinished but was thinking they were still updating it. Anyway, angels are aliens and they need humans to carry their young/filter their milk? I know Zachariah tricked Dean without telling him all the details and he was modified without consent (wasnt able to pick things up any more because of hand senitivity). Ringing any bells for anyone?

Ok hopefully I've done this right.
The fic I'm looking for I'm sure was the above trio.
It was a long fic where Dean has powers (to do with being a vessel) and the three being soul bonded.
Sam had abandoned Dean.
Sorry not much details but maybe someone recognises it?

Edited to add - one extra detail I believe Sam was hunting with the Campbell's maybe?
And I read it on livejournal