An idea

after recently being broken up with, the broken hearted boy walks home through the urban city while the camera leads the way filming him from the front and reversing to keep pace.  During this scene, the Protagonist is wearing blue jeans, a vest, and a sweater or a heavy jacket of some sort with a high rise collar or a big hood.  He has a small afro, or a very distinct hairstyle or color.  He keeps walking, obviously distraught over being broken up with.  After some time of walking (~15 seconds) he puts in his headphones, and sings along with the song aloud.  During this, it seems as if he's actually singing the song.

The camera will cut to different angles of him singing, some shots will show people walking by staring at him as he is oblivious to their stares as he continues to sing aloud, muting the world around him, focusing on the sorrow in his heart.  After he has sang the song till it's end, he pulls one earbud out, and the sound of the music is muted in one speaker to the audience, then he pulls the other out, and the music is gone, as if the audience were him, listening to the headphones.  He turns and it's revealed he's home, as he sulks into his house, and he closes the door, it's obvious that his house is very lively and people are shouting and his mother says something funny when taken out of context, and the door shuts.