To the woman in the dark green wool coat on the Brooklyn-bound L tonight: I gave up my seat for you, you sat down next to your friend, and when you got off at Lorimer we caught each other's eye and both smiled. Then you held my gaze all the way down the platform and gave me a little wave.
I should have jumped off the train and said hi. Instead I'm on Craigslist, which I'm aware is long shot.
If this is you, message me. No pressure either way, but that wave deserved a better follow-up than "doors closing."