I loved you with a fire red, now it's turning blue
According to the laws of physics, when the same material is burning, a blue flame represents a more intense, hotter fire than a red flame. So when a fire turns blue, things are actually getting hotter!
The song appeals to the broader connotations of the colors: red it hot, blue is cool. So what’s meant here is that, over time, his love faded from a passionate fire into a dying flame.
But it’s still wrong.
To help improve the meaning of these lyrics, visit "Apologize" by Timbaland (Ft. OneRepublic) Lyrics and leave a comment on the lyrics box