Dear John, I see it all now that you're gone
Don't you think I was too young
To be messed with
The girl in the dress
Cried the whole way home

from Taylor Swift – Dear John Lyrics on Rap Genius

Meaning

Taylor was depressed when John Mayer broke her heart. It made her think she was too young to go through that.

To help improve the meaning of these lyrics, visit “Dear John” by Taylor Swift Lyrics and leave a comment on the lyrics box