We were talking about wedding etiquette earlier and whether or not every adult should be invited with a guest.  Some people said that they will only invite someone with a guest if they know they are engaged or married or in a serious relationship.  I feel if the majority of people at your reception will be with someone, you need to invite everyone with a guest.  The only time I would say not to is if you are on a tight budget and there will be plenty of singles there.  What do you think?