I support Anita Dowsing’s point that marriage preparation offered by the Catholic Church should not focus exclusively on Catholic-Catholic couples (Letters, 20/27 December 2014), since this does not address the reality of our situation today. However, although many mixed couples will involve a non-believer, as she rightly points out, others will involve a believing Christian from another church community. These interchurch couples too need special attention, if their ecumenical potential