Plus 1 Question

Hi WedditFH and I are trying to figure this out. His cousin asked if he got a plus one, and we do not know if he has a girlfriend, or is just trying to bring a date. Our guest count got higher than we were expecting and are already anxious about the amount of people invited. We only addressed invites to couples that we knew were in relationships, and did not give plus 1s to everyone. How do we go about asking how serious his relationship is? I don't want to not give him a plus 1 if he is in a serious relationship, since we have given everyone else in a relationship one, but I also don't want him to bring someone just as a date.Thanks! via /r/weddingplanning http://ift.tt/2tKGV9G