I think I ABU but I'm not sure.
My brothers been with his partner for nearly 8 years. They don't want children and have always been blase about marriage saying it's outdated etc.
Now they're buying a house and making wills etc., it seems life will be much easier for them if they're married.
So because they don't really see marriage as anything big, they've decided to get hitched in a small room with 2 witnesses, no ceremony to speak of, no invites, no reception, no photos etc. They're not even that bothered about our parents (or her parents) being there.
I feel quite hurt by this because I haven't been invited but I see my brothers wedding as a big event that I'd like to be at. But they don't see it as a big event. Therefore, I'm worried I ABU but I can't help feeling a bit 
Sorry- very ranty post