They split in 2006, and a month later Madden began dating his future wife, “The Simple Life” alum Nicole Richie. Duff and ...

Lizzie McGuire star Hilary Duff dated musician Joel Madden for two years until 2006, before going on to wed singer-songwriter ...

Hilary Duff and husband Matthew Koma pull off Madden brothers costumes in dinner date with Nicole Richie and Joel Madden ...

Hilary Duff and her husband, Matthew Koma, stole the Halloween spotlight this year! Koma dressed up as the actress' ...

Hilary Duff and Matthew Koma got in on the Halloween fun by dressing up as her ex Joel Madden and his twin brother, Benji ...

Married actress Hilary Duff has seemingly maintained a close bond with former flame Joel Madden and his new wife, Nicole Richie ...

Matthew Koma hilariously dressed up as wife Hilary Duff's ex Joel Madden for a Halloween double date with Joel and his wife Nicole Richie. Musician Matthew and former Disney star Hilary wore ...

The Younger star, 37, and Koma, also 37, dressed up as twins Benji and Joel Madden, 45, for their pre-Halloween costumes for a double-date dinner with Nicole and Joel. The couples are close ...

Hilary Duff and husband Matthew Koma dressed up as her ex Joel Madden and his brother Benji Madden for a Halloween dinner ...

Hilary Duff and Matthew Koma got in on the Halloween fun by dressing up as her ex Joel Madden and his twin brother, Benji Madden. “Going as @benjaminadden and @joelmadden to a Halloween dinner ...

Matthew Koma hilariously dressed up as wife Hilary Duff's ex Joel Madden for a Halloween double date with Joel and his wife ...

Hilary Duff and husband Matthew Koma dressed up as her ex Joel Madden and his brother Benji Madden for a Halloween dinner with Joel and wife Nicole Richie.