LFS

Okay, this fic that I'm looking for is post-NFA; I don't remember how but Xander and Spike end up living together in England, then something happens to Xander and he ends up getting turned or Spike is the one that turns him. I remember at the end Xander overhears Spike and Angel speaking together and runs away because he thinks he's being rejected by his Sire and the line. Help?