Lyric discussion by dontdoubit 

This guy in high school dedicated this song for me. He never told me directly, but it was obvious I knew it through others. Years later when I contacted him on a social media sight, he immediately put this song when you opened his page.
I always felt that this song was about being obsessed with someone and being "Infected" a person that pushes you to obsession, but maybe in an unhealthy way? I never thought of this song as someone actually infecting someone literally. The bipolar explanation makes sense too. I guess everyone will interpret it in different ways and according to their own experience.

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