We invited my OH's aunt & family (husband and 2 daughters), and in their rsvp they put a note that one daughter could not make it but the other was bringing her boyfriend in her place. I thought this was a little cheeky however we didn't say anything as we hadn't realised she had a boyfriend and it was only fair when other family members were bringing partners.
Anyway the cousin has sincle split up with her boyfriend and has now sent us a message saying she has changed his flight details (they are flying here) to her friends name and will be bringing her to the wedding instead, with "is that ok?" on the end.
Am I overreacting by thinking this is incredibly cheeky? We are only having 60 guests at the ceremony, and these are family, close friends, and partners who we have made an effort to meet before the wedding day. I just don't like the idea of his 18 year old cousin who I have never met bringing a complete stranger, especially when I have a lot of evening guests I wish I could have invited in the day. I want to reply with a big fat NO WAY. Am I being a meany bridezilla?!