I don't buy into it being inherently rude. I think you have to look at the factors involved. How important is the event to the person being cancelled on? If its not that important, then I don't see it as rude. Additionally, if its something that can be rescheduled for some other time pretty easily, I'm not seeing a problem. Plans change that's life.<quoted text>
Disclaimer: Really, really, really tired but I'm gonna take a shot at this...
He can have plans changed on him. Looks like he did.
The thing here is that he was invited by A and then un-invited. THAT is rude. JMW doesn't want to ditch him because she's made plans to spend the evening with him (at A's house).
So A is rude by un-inviting him and if JMW ditches him to hang with A then he's made plans and been left in the lurch.
True, he might be fine with that. Then again,(even though you think you speak for all men everywhere, you don't)...he may not like the idea of JMW bailing on him and leaving him on his own when he's made plans with her.
Just because A is rude doesn't mean JMW has to be.
Another factor to look at is the reason for the cancellation especially compared to the importance of what is being cancelled. If we have plans to "hang out" and you're friend calls you with an extra ticket to ...whatever you chicks are into...Rent? Wicked? Hell yeah. Go ahead and go. We can "hang out" tomorrow. Or the next day. If I get last minute tickets to Pearl Jam? Later babe. We can hang out tomorrow. Pearl Jam is tonight only. However, if *WE* had tickets to Wicked, it would be rude to leave you in the lurch to go see Pearl Jam.
That's my take and I'm always right.