A lonely person who becomes involved in a relationship but when he sees the woman in his life starting to get too involved (. You're bound to fall) can't commit to her (. I don't want to be that mistake), and moves on even though it hurts probably himself as well as the woman in his life. Trying to rationalize it perhaps by saying that one day she will find someone who will give her what she needs. Knows that he won't change, but continues to replay the same song over and over and over again.