In response to the rumors, Good Charlotte's rep told Us Weekly: "Benji Madden and Sophie Monk are together and very happy." However, in mid-February it was officially announced by Monk's Sydney agent, that "Sophie and Benji have officially split.
The decision was mutual and they remain amicable." Madden is an avid MMA and boxing fan.
Madden started the fashion line called Made Clothing, along with his brothers Joel and Josh, but the line became defunct. A DCMA Collective store opened in Los Angeles on March 15, 2008, but later closed.
In 1996 Madden started a band with his twin brother Joel named Good Charlotte. While still playing in Good Charlotte, Madden and Joel wrote and produced for other artists.
He later helped write the songs "Amnesia" for pop rockers 5 Seconds of Summer and "No Ordinary Girl" for pop artist Kalin and Myles.
Madden beat Rachtman by knockout at 1 minute and 42 seconds into the first round.
On November 11, 2011, Madden and his brother Joel Madden released a free mix-tape, "The Madden Brothers: Before Volume 1".
In mid-2014, both of the Madden brothers appeared as coaches on The Voice Kids Australia in a double chair, after the example of the Dutch The Voice of Holland and The Voice Kids (Netherlands season 1) edition in which the singer's duo Nick & Simon appeared as a judging duo between 20.
In early 2015, Benji joined Joel as a coach on the main edition of The Voice, bringing the number of coaches up to five.