I don't think it sounds like Perfectly Good Heart, while it's kind of similer, it's not. Perfectly good heart is about getting your heart broken for the first time and then asking why. What did I do to your heart? is about, well, what ijustwannaplaymymusic said. Perfectly good heart = getting your heart broken and asking why, what did i do to your heart = guy wondering what he did wrong to get the girl upset with him and wondering how he can make it up to her.
I always thought this song was about Selena Gomez. I'm not saying it is, just what I think.
I don't think it sounds like Perfectly Good Heart, while it's kind of similer, it's not. Perfectly good heart is about getting your heart broken for the first time and then asking why. What did I do to your heart? is about, well, what ijustwannaplaymymusic said. Perfectly good heart = getting your heart broken and asking why, what did i do to your heart = guy wondering what he did wrong to get the girl upset with him and wondering how he can make it up to her.
I always thought this song was about Selena Gomez. I'm not saying it is, just what I think.