You’re sitting on a park bench on a cool autumn evening. You see a man walking through the park with a bouquet of flowers but it looks as if he’s lost. He takes his phone out of his pocket and raises it to his ear. It appears there’s no answer. After pacing for a few seconds, his posture quickly changes. His eyes light up and he looks at her. And you’ve just witnessed, if only for a moment, love at first sight.