A friend once invited me to go watch a movie with her and a couple friends. When I arrived she told me that the others couldn’t make it and she offered me a cocktail. I accepted, watched the movie (on opposite ends of the sofa) and went home. A couple months later I found out that the others were never invited.
This might be more her fault than mine, though.
I have been specifically and repeatedly told women at work don’t want flirting or any other interpersonal interactions. So that shit is shut completely off when in public.
And that’s absolutely true! Until the one time it’s not, and then it’s your fault for not knowing.
TBF, I normally go by “off limits unless they make an obvious move”.
Which the cashier definitely did. Of course, like the OP I wouldn’t realize it till later…