My interpretation of this song is that its about a guy that was cheated on, and the cheater said somethings like "i didn't know you would find out" or something along those lines and tries to apologize for cheating but the guy is saying "it's too late to apologize, I used to love you like a fire red, but its turning blue" meaning that since she cheated the love he felt (which was like a red flame) turned into almost nothing (such as a blue flame)
![Cover art for Apologize [Onerepublic Version] lyrics by OneRepublic](https://images.songmeanings.com/8d75ec13-0d87-4ad4-86af-2f59515f9871.webp)
My interpretation of this song is that its about a guy that was cheated on, and the cheater said somethings like "i didn't know you would find out" or something along those lines and tries to apologize for cheating but the guy is saying "it's too late to apologize, I used to love you like a fire red, but its turning blue" meaning that since she cheated the love he felt (which was like a red flame) turned into almost nothing (such as a blue flame)