You are the key to my happiness lock out the loneliness Bring back the joyfulness open up my heart Show me true love again love me like you did when Our hearts feel young and then open up my heart I've been so lost without you that I locked up my heart But I can't forget about you though we're apart Just show your love for me how happy we could be You know you have the key that opens up my heart You are the key to my happiness... I've been so lost without you...