The Internet had been buzzing earlier this month about Jay Chou's proposal after fans spotted him in London's Hyde Park and speculated that he was there to propose to Quinlivan.
He was in London filming the movie Now You See Me 2, which also stars Harry Potter actor Daniel Radcliffe.
The singer later mentioned that he will hold two wedding celebrations, one in Taiwan and the other at a secret location overseas.
Apple Daily Taiwan also reported that Chou also spoke about wanting to have five children. "I am an only child and when I was young, Christmas felt lonesome so I want to have five children who can form a band and have a lively Christmas."
He added, when asked whether he would have the stamina to father five children, that he exercises to keep fit and that Quinlivan has been helping him stay healthy, although he did not mention how, reports AsiaOne via The Straits Times.
He suffers from ankylosing spondylitis, a hereditary spine inflammation disease.
According to the Chinese media, Quinlivan, when asked by reporters at a separate event in China about Chou's family plans, replied that she would "let nature take its course".
As the singer looks forward to a new life as a husband, and possibly father, he said his songs might also reflect his new roles.
"In the past, I have written songs about grandfathers, grandmothers, parents and brothers so in the future, there will be songs about listening to one's wife and children."