Hi my son started reception in sept and seemed to make friends very quickly particularly with one particular boy. We arranged some playdates and things went so well that i now look after this friend after school one day a week. For the last six weeks My DS has come home on several occasions saying that this friend has been nasty to him at school and is making him sad. When they are at home they seem to get on fine although I have noticed a bit of tension at times and my son really seems to look up to this boy. Now ds ia saying he does'nt want the other boy to come round at all as he hates him! I understand they are very fickle at this age but I do'nt want to encourage a friendship which is making him sad. Am I overreacting? should I say something to the boy's mum?