Chest out

A boy and a girl sit in the center of the world on a train going 98.8 miles per hour. Girl wonders if everyone can see her heart pounding out of her chest as she imagines him approaching her. Boy nervously taps against the train window, hopelessly wishing she would speak to him. He buttons his shirt. She ties back her hair. Waiting. A deep breath as the train slows to a stop. Boy steps off onto the platform, and the train starts again, pulling them farther apart, leaving only two ghosts of what could have been behind.