I knew there was nothing behind the smile, but it still felt good

I take my dog to daycare a couple days a week because it's not fair to him to be home alone all day while I'm at the office, plus he has too much energy that it's good for him.

There is this woman who I've seen multiple times while doing drop off/pick up; we probably have similar schedules because she's doing the same. We sometimes exchange "hi's" to be polite but that's about it.

The other day I was walking in to pick up my dog while she was starting to pull out of the parking spot. She looked at me (i knew it was me because I was the only person walking in) and gave me a big smile as she drove away.

I'm not delusional enough to think there was any meaning behind that smile other than she was just being nice, but her smiling at me still felt good none the less. Would I want there to be something there? From a physical aspect absolutely but again it's more of a fantasy than something I would act on.