I am also lookin for any spike/xander/angelus. And I normally don't read threesomes at all but I started looking for some Spike/Dawn because I've gotten back into that a little more and accidentally found a Spike/Dawn/Angel(us) fic and *drools* it was awesome but not finished yet. So I looked for some more of those and didn't find any. But then I got to thinking and decided that Spike/Xander/Angel(us) could possibly be just as cute and sexy and believable-ish in a completely AU sense as Spike/Dawn/Angel(us). So now I am looking for that. But I haven't been very succsessful at finding very good ones.
So I am employing your help please. Any Spike/Xander/Dawn or Spike/Xander/Angel(us) would be awesome. And I would love and worship you guys forever and ever until the world ended.