So my FI and I recently moved. Right around the time that we moved, my FI was supposed to be getting a wedding invitation in the mail from one of his HS best friends. Due to the mail forwarding and all, we never received the invite. My FI talked to his friend and made sure he knew we were both coming although we didn't get the formal invitation in the mail. Background, at the time my fiancé and I had been together for 4 years, lived together for a year and a half, and engaged for half a year. We both flew across the country to go to the wedding, stayed the entire time, had a GREAT time on the dance floor. A couple weeks later after we had got back home, we finally received the missing invitation in the mail. On the RSVP card, the number of guests attending blank had already been filled out with a number "1". So I guess I wasn't even invited or allowed to go! IMO, I thought this was extremely rude and was upset we had spent so much money on plane tickets. Is it rude to not invite someone's long term significant other or fiancé to a wedding? What do you all think?