I read you and you only go onto ignore to give myself a day or a week off (in contrast to some whom I take years off from, aka, forever.
The thing is, you stressed first your distaste for flirting. I'm not a natural flirt myself, way I was raised. Only child that moved a lot, religious family, one particular group of religious nuns. I used to be scrupulous about impure thoughts, and I do mean scrupulous (so I understand some aspect of being insane). Luckily I got over it.
On the other hand, once I got a hospital job at sixteen, I glommed on to the real world. If you work at places for years at a time, people can become friends, sometimes lifetime ones, in contact once in a while for decades. That's because of some level of understanding of each other, what is funny, what is amusing, what is tacky. Times vary.
Not being able to flirt lightly? I was, back then, often flirted at, twinkle talk.
Maybe medicine is a different world than yours. I smiled, usually, as that stuff tended to happen at quiet times.
Only one guy bugged me, because we were born on the same day, close to the same time of day and he kept up the nudging. I liked him well enough as a person and I invited him to my famous to myself party, which year? guessing '72, when I invited the whole 1oo or so of the people on our department floor to my apartment, plus some personal friends, some lengthy hours on the invite. Not a small apartment, but also ordinary, a one bedroom, LR DR Kitchen, set above an old spanish style house, now long gone. My pals helped me with food. I had the brains to warn my landlords (who never raised my rent over six years, including after that) and invited them. They, of course, got outta town. Parking must have been hell.. though there was a regular driveway.
The nudge guy found one of my friends, and that lasted for a while.
So, Max, it's not that I recommend how to behave, but to me, you are more puritan than I started out to be.