My "spider friend"---
I agree with one member who said only she knows what she's thinking, and we can only speculate.
I think that she might have just been friendly, or needed the diversion from the day. The fact that she mentioned a boyfriend doesn't necessarily mean she wants it known she's unavailable. She doesn't know you well enough to know if she likes you, but she might have been attracted (even if she's taken). Or she could have just been venting. Even if she said something nice about him, and nothing negative, maybe she was just in the chatty mood.
Having been a cashier at an auto dealership once, I know what a hard, draining job it is---being on your feet all day and the often nasty public taking their frustrations out on you regarding their prices! And this was in my
YOUTH, when I was much more resilent about that AND standing all day. No can do NOW!!!! People used to yell at me about the labor charges and other stuff, so I'd have to page a service writer or the manager a lot. One woman threw her keys at me, but FORTUNATELY there was glass in front of me.

I wasn't even the "regular" cashier; I filled in for the actual cashier's breaks. But the turnover in that position was so high, I ended up down there most of the time.
So, that being said, I always enjoyed chatting with a nice customer. It was a pleasant diversion, for both me and the customer.

Sometimes you just need some human contact....I talked to some of the regulars whenever they were waiting for their car to be ready.
I went to my local mall a couple of days ago. I stopped at the popcorn concession stand; there were no other customers. The guy seemed to want to talk; we talked about 10 minutes. I had to leave, but I talked to him a bit cause he seemed to want to talk. I figured he must get bored if there's no customers, sitting at that stand all day. Nothing to do or listen to or anything----just watch the crowds go by.
If you liked talking to the woman, I see no reason not to do it again if you see her next time. In my opinion, nice people are hard to find.