A clarification of their existing friendship. Well, that's one hint. He shrugged dramatically again, and spared a glance over at Linda. 'How could he entirely derail this' consumed his thoughts. Oh Well then-

A smirk came onto his lips as he glanced over at Katara.

"Oooh~ coffee? I could have just asked you for coffee?"

Katara might have missed the reference/meaning. Buffy likely would not.