"Just joined to reply to this, even though i still have 2 decades till iam that age.
You are wrong with point (1) and (2). She probably did flirt with you. For all i know that means she found you interesting/attractive.
I flirt a lot in the past…"
" Four days after hitting 58, I participated in my first TRX class in several months. Taught by a fit and very attractive young blonde gal (with my wife in attendance I keep eyes front), I made it through and will come back for more."