[For all that his skull shifts enough to emote, lacking skin and muscles really cuts down on the amount of microexpressions Papyrus has on display. It makes sense to miss when his smiles aren't really smiles.]

I suppose... I'll have to talk about it, with anyone I bond with...

[As he muses aloud, Papyrus glances to either side - anywhere but directly at Steven - then shrugs and faces him head on.]

Yeah, okay! But, that can wait until then. I do want to come! And, I wanted to ask... what sorts of catering do you want to get???