The 47-year-old actor has been married to his wife, Deborra-Lee Furness, for the last 20 years, reported Femalefirst.
When asked by his "X-Men Origins" co-star Ryan Reynolds whether he does all his own acting, Jackman quipped, "If there's sex scenes, I do them. (That's the) key to a good marriage."
Reynolds, who has been married to Blake Lively since 2012 - agreed, and replied: "That's where the craft is."
During the comical interview, which occurred when Reynolds hijacked one of Jackman's press junkets for his latest film, "Eddie the Eagle", the "Deadpool" star asked his fellow actor whether he ever ages.
Jackman previously admitted his wife, who he met on the set of Australian drama "Corelli", is "the greatest thing" that has ever happened to him.