This song is about a relationship that has ended and the emotions and memories it has left behind. The narrator is reflecting on the person and how close they were. He is talking about the feeling of addiction and sadness in the relationship and how it ended without warning. He then expresses frustration about how the person treated him like a stranger when it was all over, "have your friends collect your records and then change your number". In the end, the narrator is realizing that this person is just somebody he used to know.