Looking for...

I only remember the beginning of this one.

Buffy chases after Xander and they start a relationship, if you can call it that. She refuses to tell the others about them. After a while she dumps him and gets a new hunky boyfriend (There was something about his name, Aiden, Adrian, something like that).
This is a Spander story, so Xander hooks up with Spike.

Where can I find this? Help is greatly appreciated.