Taylor Swift Goes "Back to December"

In an interview when Speak Now came out, Taylor Swift shared that she had never apologized to anyone in a song until "Back to December." In the music video, Taylor is writing a letter amidst a snowfall in her bedroom. In the end, the guy in the video eventually gets the letter. Do you think it's some sort of metaphor? Like she hopes Taylor Lautner (who supposedly is who the song is for—do you agree?) finally got the message?
Sound off in the comments below with your thoughts!