After another epic meltdown DS said the reason behind it was he has no friends. Everyone else seems to have formed new groups or have stuck in the same group after the class switch up apart from DS. He seems to have noone to play with at lunch. I must admit, I noticed this a while back but didn't think it bothered him as he never mentioned it. Apparently a few kids have said they don't want him to play because he plays to rough, we have discussed this together at home.
At home he is either Lego or paper and pencils or books or throwing himself at the sofa.
I'm just not sure how to deal with this no friends thing. It must be hard on him and would explain why the last few weeks he has been coming home in a terrible mood.