Two pair of eyes wandering around; sightseeing while secretly searching. One finds another, two surprised faces now they are. Is it genuine? Or is it expected; silently hoped?
Upon bumping onto each other the two planned their surprised faces. The two planned the shock, the losing-words, awkward moment in between. So fine their practices were, they didn't realize how expected the unexpected was for each other. And so the two walked into their cups of coffee, in their own minds practicing the lines they've prepared for the long-awaited encounter.
They created a chance, and both confident that it was a coincidence for the other.