Nothing...

In a park, a man and woman kiss on a bench while a man in a red jacket walks past, then sits alone on a bench looking dejected as pigeons peck at the ground nearby. The scene shifts to a therapy office where the man in the red jacket watches a couple kiss, then crosses his arms with a disappointed expression. The final scene shows him in a dimly lit arcade, standing before a row of video game machines, then turning to face the camera with a weary look.