I would really appreciate some advice/tips on how best to tackle this as I am at a bit of a loss.
DS has known this little boy since he was very little (I am friends with his Mum and we have spent a considerable amount of time with them). He went to the same nursery which is where we first noticed that it was a bit of a problem. DS talked about him perpetually and would only play with. His friend would say quite unkind things about him and exclude him but still DS wanted to be his friend. We mentioned it to his keyworker who spent some time talking about playing with children who are kind to us etc but there was no change. DS finally began playing with others right at the end of his time there when his 'friend' was away for a long period of time.
Anyway, now they are at school together and the problem has continued. The only person he talks about is this little boy and he isn't interested in playing with anyone who isn't associated with him. The little boy continues to be pretty horrible to him (understandable as he probably feels very overwhelmed by DS's behaviour). I have mentioned to his teacher that he is struggling to make other friends. She said that he was interacting with others in class but that she would mention it to the playground staff. We have had a couple of playdates but these haven't been successful in establishing relationships. We have chatted alot about how much fun it can be to play with different people but DS says that all he can think about is this particular friend.
We are at the point now that we have even considered changing schools, though I am pretty sure that he would find someone else to fixate on. His interactions with children outside of school (friend's kids and cousins) are pretty positive and he really enjoys the company. I would really welcome any suggestions and advice.
Many thanks in advance and sorry for the long post.