Arthur was changing clothes after school next to Mark. And of course, Arthur changed his clothes faster because he was lightly dressed and in general he didn't care about it. He waited patiently for his younger friend to get dressed. Mark was leisurely putting on a jacket, hat, and scarf. They went outside, it was evening, sunset. Arthur put his hands in his pockets, fiddling with the money there. He looked at Mark, who was actively telling something and then suddenly, quietly, so as not to scare, he asked.

Do you want to go to the store? I'll pay for you, whatever you buy.

Mark looked at him in silence for a couple of seconds, and then nodded actively, of course he didn't mind. But why did Arthur ask that? He doesn't know himself.