I'm part of a longstanding group of 5 friends from university. One person in the group I'm not particularly close to, the other 3 I consider to be close friends. We often organise things for major life occasions like birthdays and weddings and over the years I've noticed more and more that I'm left out of things and am the last to know even though I always include them in anything I do and make a big fuss over their birthdays and occasions. There are many small examples, like them organising group gifts where I'm not given any input but am then asked to contribute funds once they've already decided, outings that I find out about afterwards, not being added to WhatsApp groups etc.
One of the group is now getting married soon (we're not in the UK) and I've just gotten a message saying 'We've organised a lunch as a last hurrah for the bride on Saturday, would you like to come?' In those words.
I'm torn now about what to do, because yet again it's them organising something and inviting me at the last minute, even though I would've been happy to help organise things and am helping the bride with her hen's party. I feel like such an afterthought and am pretty sure going along will just make me feel even worse.
Should I just opt out of this friendship group altogether? I'm sick of the high school feel of it all and trying so hard to keep up with people who clearly don't feel the same way about me 