When Jamie and Jamie met they. Well.
Had a whole pot of coffee between them, leaning in to talk over a tiny cafe table. They mapped out where their lives diverged, where they were the same, with a kind of amused glee.
They talked, they got to know each other.
Jamie made a promise to the other man that if he left, the younger Jamie would take care of Jack, the closest to their father, his actual father, and John.
Which turned out to be fortunate, as the older alternate left the following morning.