“Mine” is the lead single from Taylor’s third studio album Speak Now.

It tells the story of a girl whose parents' failed marriage has caused her to take a pessimistic view on love. Over time she falls in love with someone who convinces her to start believing in love again, but she still fears that something will go wrong. -genius.com

“Dear John” is an ode to Taylor’s short-lived relationship with fellow singer-songwriter John Mayer. Taylor conveys her feelings of frustration over the way she was treated by John and how she disregarded the warnings from others. Besides the obvious song title, there are multiple references to Mayer directly, including the mention of their over ten-year age gap. Sonically, Taylor purposefully added guitar slurring to the background instrumentals, a guitar playing technique seen all throughout Mayer’s music. -genius.com