Buffy kisses Spike to calm him down

I don't remember much of this story, just that Buffy and Spike were near/outside of the Magic Box when Buffy kissed Spike to calm him down because Spike was vamped out, and Xander saw this exchange.

Pretty sure that is

Misplaced by BuffyMeetsSpike, NC17
Goes off canon during Gone. The Trio builds a ray that is meant to cause amnesia and they test it out on Buffy and Spike. The actual effects lead Buffy and Spike to experience each other's worlds in a whole new way. They're not so much gone as... temporarily misplaced.

It's over at the Bloodshed Verse.

Thank you, that's it.