Question: Kellie Pickler is the self-titled second studio album by the American country artist, Since the albums' release, three more singles have charted; including which song, written and performed by American country artist Kellie Pickler, and co-written by Taylor Swift, at number 9?
Sentence (from "Best Days of Your Life"): The song is about a narrator explaining how her former boyfriend cheated on her and moved on to a new girlfriend to start a family with, wishing them well on their new life but says that the new girl won't top what they previously once had before.
Relevant evidence: No