"Yeah..." Xander tried to think of all that would entail. It would just be him in the hut, though as much as living alone creeped him out, he wasn't about to leave it since she'd built it. His normal everyday routine seemed suddenly foreign to him. "Not much else to do."

Is that how Buffy had felt when all the others had disappeared on her?

"I promised her, almost everyday, that I wouldn't disappear...not if I could help it. I wouldn't do it to her, not after so many others had." He hadn't meant to say it, to tell Spike about what had been running through his head all morning. It just kind of popped out.