Thanks all of you for your wonderful replies!
I can't sleep, and it's in the early a.m....not because of the flirt today...I just get my days and nights mixed up during my summer off from teaching, and I'm a bit anxious anticipating returning to work next week.
I really HAVE gotten myself out of the mindset of dating in the past few years....hibernating really. If a man really WOULD be flirting or expressing interest, I would have a hard time determining this. He may have just been enjoying our conversation. It was a genuinely mutually interesting give and take, and I haven't had such a face-to-face exchange with a man in several years. I do know he has to be quite a bit younger than me, though hard to tell his age.
I'm thinking this is a good basis for a friendship, and maybe even some photography outings, if I care to pursue it...maybe not! I just don't know right now. If I should run into him again soon, I'll wait to see if he brings it up!
Patty