There is a group of 7 of us who have been friends for years, all in our early 40s now. We meet fairly often, as a group and separately and I love all of them. One of them is the loveliest woman but her lack of responding to messages is driving the rest of us mad. Someone will suggest a meal out/show etc and people will respond yay or nay, but she will either not open the message for a few days or read it and not respond. She is always on her phone.
We used to wait to confirm things when she hadn't responded but lost tickets, reservations etc and couldn't organise transport etc., until we knew if she was coming. The latest was last Tuesday when a friend asked if anyone wanted to go to a popular show and said 'I'm booking at the weekend, so if you're in, let me know by then'. A couple of us are going, friend didn't respond and is now pissed off that she was only '@' once and now can't get tickets. I'm so sick of having to chase after her when she's been invited to something. I think it's rude not to respond but not sure if IABU.
I'm aware this is long and so childish, so feel free to ignore, I'm just having a bit of a vent.