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Summary: Based on my own AU fic “Hearts Breaking Even” in which a young Buffy spent a couple of days with a nine-year-old William (after jumping through a time portal after a demon). When Spike comes to Sunnydale as a 120+ year-old vampire, they eventually recognize each other and adult Spike and slightly older Buffy find themselves strongly attracted. Needless to say, the fic eventually ended Spuffy, and we can assume they stayed together after that story ended. Now Buffy has been sent by the PtB back in time again. But only for one night....