Thanks for the replies girls. To answer your question wysiwyg, DS1 is pretty much the same when it comes to his friends, maybe slightly more tolerant to a point. If we are all outside then DS1 will want the bike or ball that DS2 is playing with. He will hide the sand pit toys so his little brother can't play with them. At the park he will meltdown if DS2 gets to go on the swing. He will sit at the top of the slide so DS2 is unable to go down it. He has been known to also put certain treasured toys back in the toy cupboard at playgroup so no one at all can have them.