Campbell's mother, Marnie (née Neve), is a yoga instructor and psychologist from Amsterdam, Netherlands, who also ran a theatre in Guelph, Ontario.

[6] In celebration of the fifteenth anniversary of the picture, Campbell spoke of the social climate at the time and how he, a straight actor, had taken on a gay role.

He moved to the United States in 1995 where he was soon cast as Teddy Delacourt in producer Aaron Spelling's primetime teen drama/soap opera Malibu Shores.

Campbell joined All My Children as the recast Bobby Warner from 2004 to 2005, replacing Brian Gaskill for the role after a seven-year absence for the character.

In May 2010, Campbell had a guest-starring role as victim Ben Rooney in CSI: Miami season 8, episode 21, "Meltdown".

He can also be seen playing the villain Pierce Peters in the 2015 Disney Channel Original Movie Bad Hair Day.

[6] His earliest acting roles were on the stage for his father's panto productions for the Association for Scottish Traditions and Arts in Etobicoke, Ontario.

He then toured Europe in the early 1990s, acting in stage plays such as Der Ritter Von Mirakel and A Clockwork Orange at the Schaulspielhaus, Nürnberg.

Campbell made his directorial debut with Reach, a one-act play that starred Matthew Lillard and Sandra Thigpen.

in 2002, in which he performed on a national tour of the United States and in London at the Menier Chocolate Factory (July – September 2005).

[citation needed] Their first child, a daughter, was born in 2012, but died only days later due to the genetic condition Edwards syndrome.

[12][13] After facing infertility issues of their own, Campbell and his wife decided to become spokespeople for the BabyQuest Foundation, a 501(c)(3) charitable organization that is "dedicated to helping couples and/or individuals build families through advanced fertility treatments".