I think for me it would be like:
Goose is standing by the cookies section, wondering what cookies to buy.
Then she notices a guy standing by the candy section.
She takes a glimpse at his face, wondering if it was someone she knew.
Then she realizes that it was Seonghwa from ATEEZ.
Her heart starts fluttering.
One part of her wants to go over and say hi.
But she feels to shy and doesn't want to disturb him.
She thinks that he perhaps would rather be treated like a normal person.
She looks at the mint chocolate cookies and puts it in her cart.
not at me writing a fanfic lol