I walk to school with a neighbour both our dc are in reception together. I thought we were friends but found out when dropping off this morning that the majority of the mums from the reception class were going out for lunch together today. Neighbour didn't mention it on the way there or back, I wasn't invited only overheard them talking about arrangements. The class is very small and I assume that I wasn't included as I'm the only one with other younger dc.
I know I am being silly and couldn't go anyway as I have proper friends I had already arranged to see but still....