Marvin Humes and Rochelle Wiseman are keen to have a large brood of children, but will not be expanding their family for some time.
Marvin Humes and Rochelle Wiseman want to have a ''football team'' of children.
Marvin said: ''I think all girls are broody all the time. We don't have any plans to have children for a while, but we're getting married and, absolutely, we want to have kids. I want to have a football team.
''The wedding will be great, I really cannot wait to be married.''
The 27-year-old star does not yet know if they will be writing their own vows for the ceremony.
He told the Daily Mirror newspaper: ''We don't know yet whether we'll compose our own vows or what, but it will be a very special day.
''Rochelle is fully in control of the wedding.''
Marvin is not the only member of JLS to be thinking about children - both J.B. Gill and Aston Merrygold are considering adoption.
J.B. said: ''It's definitely something that would be fantastic to do. There are so many children all over the world who need good homes.''
Aston added: ''We're not in the right place for parenting at the moment as we're not responsible enough, but this is definitely something I'd like to do in the future. Angelina Jolie, Brad Pitt, people like them are inspiring around the world, helping others and giving better lives. It's amazing.''