•
— Possibly a flash that went on from the right
and, by chance, was in sync with your shutter.
Chance is an element not to ignore in any ac-
tivity… sometimes good, sometimes bad. Here,
chance —if it was— granted you a great shot.
Chance won't roll over anyone to force itself in,
one must invite it somehow… by doing the right
thing… at the right place… and at the right time.
I love your shot, Dan!
I saw the backlight produced by a couple of mobile phone lights
Then, even better for you!
Mobile phones are, as you observe, a "better" chance
as they have a much longer duration than flash pops
and so the love sign.