Looking for this post-series fic where Buffy and Spike are estranged from each other. They encounter each other from time to time because of work - Spike has ended up working with either Giles or the Council - and there are lingering hostilities between them (B & S). For some reason, a whole bunch of different Spikes from different dimensions start popping up in Buffy's house. They are from all different points in Spike's timeline, one is evil, one or more are William, etc. Some of them are in a relationship with the Buffy in their dimension, some aren't (one is even with Angel!)
I don't remember what has caused them to get sucked out of their dimension, but in the end they all get back and the primary Buffy and Spike mend their fences and get together.

There's "Reflections" here at TSR by msclawdia. Maybe?

Thanks Ever for the suggeston -

I remember this fic... I think it was a wish or spell by Willow. All of these different spikes from different dimensions show up. She becomes kinda of friends with one of them who is mated to his Buffy in his own dimension and the real spike shows up unimpressed by it all. Pretty sure the friend spike tries talking sense to him before his own Buffy shows up to save him and bring him home. I don't remember the name either but I might have it saved so I will take a peek

Turns out it was Reflections by msclawdia that I was thinking of - thank you, smitty! But now I am interested in the fic brovic suggested. Hopefully you can remember - it sounds intriguing!

Um... That would still fit "Reflections"

smitty
You're right! At first I thought the description had Willow becoming friends with one of the Spikes and that made it seem a completely different fic to me.

You're welcome. She was always fun to read.