You and Xiao are workmates and for the past few weeks you started to notice change in his behavior. He started to avoid you and whenever you two did talk he never looked at you in the eye. Sometimes you’d hear him cough non-stop.

One night you two were waiting at the bus stop after a long night shift. Xiao stayed silent and did not even look at you once or even tried talking to you.

Do you say something? Or will you just leave it like this?