Have known flaky friend for nearly 20 years.
We are obviously still in touch although meeting up is sporadic. This doesn't bother me as I am busy with work, 3 kids and other stuff.
What does bother me is, 9 times out of 10, on the occasions we do arrange to meet she cancels at the last minute. Today a text at 1015 when I was due at hers at 1030, I had already left the house.
The lack of contact isn't an issue, I am neither lonely nor needy. I am working all weekend and could have used today to do something else. Instead I am left high and dry, as per fucking usual when I am supposed to see this friend 
She also missed a rather important celebration of mine last year, no notice given. Only response was when I text her a few days later to see why she hadn't bothered showing up.
So, her wedding is next month and at this minute I have no inclination to go. I am so fucking angry and, tbh, I think this friendship is over for me. I can no longer be arsed.
AIBU?