"Should 've Said No '' is a song written and recorded by American singer - songwriter Taylor Swift. The song serves as the fifth and final single from her self - titled debut studio album. The song is about Swift addressing her former lover who cheated on her. It became her second number - one single on the Billboard Hot Country Songs chart, and was a Top 40 hit on the Billboard Hot 100. In addition, "Should 've Said No '' has been certified platinum by the Recording Industry Association of America (RIAA).
who is should've said no written about
former lover who cheated on her