Geyer auditioned for the fourth series of Australian Idol in his Australian hometown of Melbourne.
He moved to Melbourne, Australia, at age 15 leaving most of his family behind.
Within weeks after the series finale of Australian Idol, Dean signed an exclusive recording contract with Sony BMG in 2006.
Dean released his first single, "If You Don't Mean It" which premiered on Australian radio stations on April 5, 2007. In 2008 it was announced Sony BMG had dropped Dean from the label.
Geyer began a relationship with Lisa Origliasso of the Australian duo The Veronicas.
In April 2008, Origliasso publicly announced that she and Geyer were engaged.
However, the engagement was later called off due to work commitments.Dean is currently dating his Never Back Down 2: The Beatdown costar, Jillian Murray.He appeared in Season Four of the FOX series, Glee, as Brody Weston, an upperclassman at NYADA, who has an interest in Rachel.Dean Geyer was born in Johannesburg, South Africa, as the oldest of three children to parents Debbie and Keith.Dean Stanley Geyer, born March 20, 1986, is a 30-year-old South African born Australian singer-songwriter and actor.He came third in the 2006 season of the talent show television series, Australian Idol.