Prince Harry says he and Meghan Markle hope to start family in the future.
Harry said "one step at a time" when asked about plans for having children.
He has said in the past that he wants to have a family.
Harry's older brother Prince William already has two children and his wife Kate is pregnant with their third.
Prince Harry, fifth in line to the British throne, will marry Markle in the spring, palace officials announced Monday, confirming months of speculation.
Markle, an American actress, humanitarian campaigner and lifestyle blogger who succeeded in show business before falling for Harry, will become a senior member of the royal family as the wife of one of the monarchy's most popular figures.
Harry, a bad-boy-made-good by his tireless devotion to wounded veterans and his embrace of a variety of charitable causes, has said for several years that he wants to start a family, and the rumors of his engagement to Markle have been flying for some time.
The marriage represents a first-ever blending of Hollywood glamor with the once-stuffy royal family, which has of late seemed less fixed in its ways, and brings a mixed-race American divorcee into a highly visible role.
The proposal came about a year and a half after meeting.