Two of my friends will often reply to invites for things (dinner, BBQ, parties) with a non-committal 'I'll let you know' and then of course, they don't. And they more often than not, don't come.
One friend, in particular, gives me the impression she is always waiting for a better offer. It's rarely a reply like 'sorry can't make it, I have plans already that day' or 'yes I can come see you then!' It's always 'ill let you know, not sure what I'm doing that week yet etc'
Apart from being a pain when it then comes to catering for say a BBQ, not being sure on number etc but I'm wondering if it's actually rather rude?
Would you keep inviting these friends?