Seeking Willow & Spike time travel/alternie history - lost title/author

[dpchonastick.livejournal.com]

Looking for a longish spillow-ish - multi-chapters where Spike's memory/history keeps changing - Dru's his sire, Angel's his sire, etc.  I think that Willow caused this with a spell and Spike (season 4 still snarky and evil-ish) forces her to help him sort things out.  Plot involves time travel and Willow meets an older, long lived version of her wise witchy self.  As Willow's actions/motives are revealed there is a throw away line about "other ...verses where Spike falls in love with the slayer".  That's about all I can remember other than the version I read has a yellow background.  Does this sound familiar to anyone?