The mirror outside All Saints Church said it before anyone else could. Propped against the flint wall, in white lettering, it welcomed guests to the wedding of Davina and Stephen, and offered a small piece of evidence: proof that swiping right can lead to the rest of your life. They met on an app. On the first of October, the flower girl was twirling in its reflection, the harpist was playing inside, and a family block in flame orange was filling the front pews. Some weddings