I do need some advice. My eldest started primary school last year and bonded with a really lovely boy. A few months into the school year a third little boy joined their group and ever since that, I have noticed changes in my son that do worry me - he's using rude words, he's never used before and has become quite aggressive towards his little brother. I am also worried that the new friend is trying to alienate the other friend. We had a play date at home with all three of them and it was quite obvious. The new friend is a very bright child but very challenging behaviourally. He has no regard to other people and is rude to adults and children, but my son seems to be completely in awe with him. From a brief encounter with the dad, it looks like we're not on the same wavelength, when it comes to parenting.
I really don't know what to do. I have been told that the new friend, has no other friends and really don't want to be alienating him, but at the same time I am worried that his influence on my little boy is not good and the other friend is a bit left out of what used to be a beautiful friendship.