Ok, I have a future "step- brother in law: who is becoming a problem. At first he was just whining about the cost of the tux...so much so that his father paid for it for him. Anyways, he started dating a girl whom he never met across the country online. They just met this past weekend and didn't introduce us or anything to her when we came by his apartment, they stayed in his bedroom ( he lives with my other future brother in law). Apparently the girl is planning on coming up here this summer, same time as my wedding. I sent the invitations out already and his did not include a + guest. Is it rude for me to tell him to not bring her if indeed she is here the same time as my wedding? I feel that it is rude and you dont bring an aquaintance date to a wedding. We have a budget and are limited on space, yes it is only one person but this is a close friends and family only event and if he didnt even introduce us to begin with I feel like that is rude itself. I don't know what to do.
**a short backstory on this guy** He got married July 2011 and about 3 months later his wife left him for a woman, he is still technically married and has been bitter about our wedding since we announced it last June. He is really not fun to be around but I put up with him for the sake of my fiance since it is his step-brother and best friend.