Start by learning, "retail employees have to act friendly and be nice to you. It has nothing to do with their actual feelings."
It's good practice for "women often have to act nice to men they don't like, because they're afraid of being harmed by them before they can get to safety."
Honestly her liking him or just pretending is irrelevant. Start by learning "offering to rub someone's feet (or any other somewhat intimate touching) is NOT a good way to flirt, even if they do like you!"
Still, if instead of talking to her multiple timers during her shift and creeping her out with the footrub offer, he could have just asked her for a coffee after work, which she could politely decline. After that, he could leave her alone, and still occasionally shop at the same Walmart.
retail employees have to act friendly and be nice to you
As an European, if a retail employee ever acts friendly or even smiles at me I'm not setting foot in that retail chain ever again.
I don't want creepy freaks bothering me while I'm trying to shop, I just want to shop and be left alone unless I ask for something (which would also be a red flag, the products should be sufficiently well organised and labelled that asking will never be necessary).
In Europe not hitting customers with the wet fish is considered the height of customer service. Anything in excess of that is considered highly intimate.
Seriously though, the American style glad-handing salesman attitude does not go over well anywhere other than the United States.
"Wow nice choice there sir. That's quite the quality piece you looking at. I'm sure you know your way around those items, but would you care for some advice to assist your shopping experience? Or is there anything I can do to make your shopping experience exceptional on this fine day?"
Get fucked.
Some kid comes over and looks bored out of his mind "So you want help or nah?"
Haha, I worked in a high-end gift shop and spent my day reading labels for ladies too vain to wear reading glasses.
I'd help them pick out the gift they needed, often for their mother in law which I think is unfair, it's HIS mom. Then while we wrapped the gift, they'd get several other items for their own home.
We weren't on commission so it was never a "hard sell," and I was always sensitive to people who prefer to shop alone because I do too. But some customers want attention or at least human interaction.
And sometimes I would take a mom's little kids around the store, showing them the things it was okay to touch and steering them away from the fragile porcelain, so their mom could relax enough to think about what she needed to get. Fortunately we had a section of "grandma gifts for children" so I could always take them there if she was comfortable having them out of her sight.
And then a few times a year we'd get a man, who was shopping for his wife or his own mother! We'd always help them out because they'd be lost, and often it was less about finding the things, and more about asking about her, so we could help them figure out what she might enjoy and appreciate.