I have a friend who I would class as a good friend (we don’t see each other lots but every now and then) and our children are nearly identical in age. She popped round yesterday and just casually mentioned her sons party that she had had last week. I had no idea this party had even happened. She didn’t invite me or my son. AIBU to a) be upset that she didn’t invite us and b) think it’s odd that she would bring it up so casually to me like I’m so irrelevant that it doesn’t even matter than she didn’t invite us. Just made me feel like I was a nothing person to her and my feelings didn’t matter at all. The party wasn’t small by the sounds of it - at her house with bouncing castle and entertainer etc. Kids are preschool so not like they have a whole class to invite.