where do you look when you’re passing someone on the sidewalk or in the hallway?

i overthink this one a lot and it's become a huge anxiety-inducing thing for me when i'm out for walks or in large buildings with strangers. it feels creepy if i stare at them the whole time while we get closer but if i look away, it also feels like i'm being rude or fake nonchalant or just plain strange by pretending the grass or the walls are way more interesting.