Hi i looking for a story that i read i while ago. I dont remember the site or the title or author all i remember is that buffy is from heaven and spike from hell they meet and fall in love when there not suppose to. At the end buffy ends up pregnant by spike. There was a second part mostly about the baby and it was never finished. Any help would be appreciated. Thank u.

Is it Impossible by bitterness?

If so its on Elysian Fields.