I Would Still Have Loved You (part 1 of series) (гет)

A what if fic in which Buffy and Spike are sent back in time (separately, and unbeknownst to each other) from sometime not terribly long after "Chosen". Think AtS season five. Their mission is to prevent Glory from opening the portal and thus prevent Buffy's death and reincarnation; thereby preventing the rise of the First Evil. For whatever reason, they both end up in Season Four, rather than when they need to be.