On the song quoted above , You know I 'm no good , which is slated to be the first stateside single , Winehouse admonishes a lover for believing in her .
Is quick to admit that its herself Winehouse is cheating .
On the song quoted above , You know I 'm no good , which is slated to be the first stateside single , Winehouse admonishes a lover for believing in her but is quick to admit that its herself she is cheating .