Mein Herz darfst du nicht fragen - 1952 is rated/received certificates of:
West Germany:12
Depending on how close you are to the person : "Das darfst Du nicht!" Or more formally : "Das dürfen Sie nicht!"
Nicht mein Tag - 2014 is rated/received certificates of: Germany:12
Was du nicht siehst - 2009 is rated/received certificates of: Germany:12 (f)
Nicht auf den Mund - 1999 is rated/received certificates of: Germany:12
Nicht ohne dich - 2001 TV is rated/received certificates of: Germany:12
Cindy liebt mich nicht - 2010 is rated/received certificates of: Germany:o.Al. (f)
Vergiss mein nicht - 2012 is rated/received certificates of: Netherlands:AL Singapore:PG Switzerland:10
Nicht mehr fliehen - 1955 is rated/received certificates of: Germany:16 Sweden:15
Du bist nicht allein - 2007 is rated/received certificates of: Germany:6
Du bist nicht allein - 1949 is rated/received certificates of: West Germany:12
Nicht nichts ohne Dich - 1985 is rated/received certificates of: West Germany:12 (f)
Das kommt nicht wieder - 1958 is rated/received certificates of: West Germany:6 (f)