At the beginning of the song, Swift takes us back to the past with a flashback of herself when she visited her former partner's home. However, she is seen here thinking about a scarf. Swift states, "Left my scarf there at your sister's house / And you still got it in your drawer even now" (3-4).
Tone: nostalgic and bitter.
Swift references a moment in which her ex-boyfriend and herself are in a car, "On that little town street / You almost ran the red 'cause you were looking over at me" (13-14).
Theme: your past actions may haunt you.
In the second chorus, Swift has a flashback to, "'Cause there we are again / In the middle of the night / We dance around the kitchen in the refrigerator light" (24-25). The flashbacks in the song, including this one, begin to lead up to the moment where Swift's boyfriend breaks up with her.
This scene describes the bridge of the song in which Swift sings, "Hey, you call me up again just to break me like a promise / So casually cruel in the name of being honest" (30-31), where Swift describes her former partner breaking up with her.
During the third verse, Swift implies a heavy loneliness as she adjusts to the absence of her ex-boyfriend, specifically in the lines, "After plaid shirt days and nights when you made me your own / Now you mail back my things and I walk home alone" (36-37).
This scene depicts Swift's former partner reminiscing about the past as well as his own actions in solemn retrospect as he keeps the scarf that she "left [at his] sister's house" (3). Swift explains, "But you keep my old scarf from that very first week / 'Cause it reminds you of innocence and it smells like me / You can't get rid of it, 'cause you remember it all too well, yeah" (38-40). Swift refers to how the memories of them together are too raw and painful for even her ex-boyfriend, who broke her heart.