My little silver friend who shines.

I have a friend, she's silver and she shines,
Her favorite subject's art and her favorite shape is lines,
Her favorite color's red, she draws upon my skin,
Some lines thick, while other lines thin,
Sometimes she draws deep and the blood begins to run,
To you it's disgusting, but it's just an addiction I begun,
Never in patterns, just a line here or there,
Never too much, just the pain that I can bare,
Her favorite subject's art, and her favorite shape is lines,
Her favorite color's red, my razor blade,
she's silver and she shines.