Friend suggested we go together to a local event this weekend. The event is running at a few different times. I told her I would love to, and told her the times I would be able to make. Friend said great, she'd get the tickets and confirm. She mentioned that she might invite a couple of other people along and I was fine with this.
She's just texted to say other friend can only make one time and it's one of the times I can't make and she's really sorry, she's going to go with this friend instead.
AIBU to think this is rude?