12yo boy. Only one of 6 not invited to another’s party. Parents were asking before the weekend about lift sharing - had to say we were not invited, then kids asking DS on Monday why he wasn’t there. I think he had a heads up about it so was quite cool but I feel like shooting off a message to the mother explaining that she created a nasty situation.. I know I shouldn’t but has anyone ever done this and how did it actually turn out?