I don't remember much about this particular story. I think Spike had returned to Sunnydale and not much had happened, and he was fairly amiable, not starting stuff or doing anything ambiguously evil. Anyway, Buffy is having a crisis in her current relationship or something like that, and she's talking about it with Willow and Spike as well (maybe?). Anyway, she says something, and Spike replies along the lines of "'Course, I would, you're hot." Or something along those lines. This is honestly all I can remember. Sorry if it's very vague and/or not too helpful.