I remember we once watched a lifetime movie and someone slept with someone, but it wasn't the right person, (it was dark) (and unrealistic) I asked you how you would be able to tell it was me in a dark room and you thought for a moment and then said
well I'd look for the scar on your back
and I was confused because there was no scar on my back. But you pulled my hand and placed it there and there it was. No wider than a dime.
And you smiled again and said that's how you'd know it was me.