[Sans doesn't stare at Tim while he sits. In close proximity to another person, there were plenty of less direct ways to observe someone. The way someone breathes, their pulse, the angle of their shoulders. These were things that could be felt as much as they could be seen.

Running a hand over his skull, Sans leans against the far armrest.]

I mean, technically, we've already been introduced, right? I'm just lagging behind. [He elbows Tim gently, in a way he hopes reads as genuine.] You don't have to take it all on yourself, pal.