You know that kind of queasy regret you have after doing something to somebody who totally didn't deserve it but was in the wrong place at the wrong time? Well, apparently, Taylor Swift does. In her song "Back to December," she apologizes to an unnamed person: "So this is me swallowing my pride/ Standing in front of you saying I'm sorry for that night." In December of last year, the lanky country singer was rumored to be dating Taylor Lautner, he of the abs and werewolf-ish charm. Just in case Lautner didn't catch the song on the radio, she talked it up in interviews too. "I've never apologized to someone in a song before," she told one news outlet. "The person I wrote this song for deserves this. This is about a person who was incredible to me — just perfect to me in a relationship — and I was really careless with him."