My DS (3) a wee boy at his nursery were inseparable for the first three years of their lives, and DS would say how much he loved him and couldn’t wait to get to nursery to play with him. We mentioned this to his parents when we saw them and tried to arrange a play date by leaving a note but didn’t get a reply and didn’t follow up. A few weeks later my DS said X had said he couldn’t play with him inside anymore, only out on the playground. A few weeks after that DS reported that X had said he wasn’t his best friend anymore and they weren’t friends, etc., which he found upsetting. His big brother advised him to find other kids to play with and he did, and we didn’t hear about X again for months. We’re now hearing about X all the time as he keeps pushing, hitting and last week biting DS. DS says he only does it when he’s angry and it’s because he isn’t a friend anymore. Spoke to nursery, who say they are actually still good friends and play together all the time, and X is hurting lots of kids, DS only gets more of it because he’s always nearby. They are managing X’s behaviour with his parents and their approach is to redirect the kids, not punish, and that they don’t dwell on the bad behaviour or bring it up again after it’s happened. We love our nursery and trust that they know what they’re doing, but I hate seeing DS hurt so frequently, especially believing that it’s something to do with himself that’s causing it. I don’t want to complicate matters but I also don’t want this to keep happening. Any advice?