Hi, I need a bit of advice please. My little boy's birthday is soon, he's in junior school. We invited around 15 kids to a local centre, the party costs £27 per child. I spoke to one of child's mum before we booked a place and mentioned that we are considering a party and once the place was booked, I felt compelled and invited her son. The problem is her child came to our place for a playdate lots of times, but they never invited my son to theirs. My son is crying now, saying that he is not a friend with that boy anymore and very upset that I invited him. They already replied confirming that he will attend the party. My son is crying saying it's his birthday party and he doesn't want that boy to attend. I don't know what to do. Should I uninvite the kid or leave things as they are?