In a nutshell... My 50th birthday is on a Saturday this year. My husband has been saying at family events over the last year or so, where my sister has been present, that it would be nice to have a big party to celebrate. Extended family, old friends, new friends, everyone we've ever known (husband loves a party) would be invited.
Discovered by accident yesterday (BIL mentioned it) that my sister has booked tickets for that evening. For a band she loves and sees regularly.
AIBU to be upset that my sister obviously took the conscious decision to blow out any event I might have planned for my birthday in favour of going to a concert?
My second AIBU in a week. Perhaps I'm over-sensitive...