Ok so I have a few people on my invite list who are not in relationships with anyone...do I have to include a plus one with their invite or is it not necessary? There are a couple in particular that I know they wouldn't bring a date instead they would bring a friend that I've never actually even met before. I don't want to seem rude by not letting them bring a guest but at the same time I don't know if I want to be meeting my guests friends at my wedding.