Okay, I don't remember where I found it, and I only remember that there was a love spell attatched to Spike's lighter, and a demon was looking for said lighter. Does this sound familiar to anyone, or have I lost my marbles again?
EDIT: Nevermind, I found it; it's Xander Has Kittens
by Splurgie. I found it about five minutes after I posted this. *blushes*