"Forever & Always"
The telling lyrics: "Was I out of line? / Did I say something way too honest? / That made you run and hide like a scared little boy?"
Who it's supposed to be about: Joe Jonas
Why? This 2008 song was written for her album Fearless, released just after the breakup, and also features lyrics about Swift staring at the phone (she famously revealed that Jonas broke up with her on a brief phone call). As a retort, Jonas wrote the song "Paranoid."