"Teardrops on My Guitar" analysis (imagery)

This song details a girl's longing for a boy who is in love with someone else.  The speaker tries to put on a front when she is with the boy, to hide the effect that he has on her.  Even though she knows that the boy has chosen someone else, she still thinks about him all day and night.  By the end of the song, she finally tries to begin to move on.  The imagery in this song is found in the title "Teardrops on My Guitar."  The phrase is a unique one and it evokes a powerful image of a young girl crying while writing a song, thus appealing to the listener's sense of sight.