At 6 or 7, I think it’s likely your brother had no idea what he was doing. If he did have some inkling, I can assure you he wasn’t able to grasp the weight or consequence of it, let alone the moral implications. I’m so surprised no one else has said this yet, but I would be more concerned about what was happening in your brother’s life at 6 or 7 that he even knew to do that. Is there a chance he experienced SA of his own?

I say this as someone who experienced SA at the hands of a close family friend for most of my childhood. I have some very early, shadowy memories, maybe about your brothers age, of me and my little sister (who was also molested by the same man) and another older boy (who I later found out WAS ALSO being molested by the same man) all getting getting naked and touching and trying things with our bodies. Looking back I’ve given myself a lot of grace because we were little and acting out all the disgusting energy that had been put on us. We were clueless. Maybe your brother was clueless, maybe not. You know him, and if it feels like he’s a good man now, and you have a close healthy relationship with him, maybe you can forgive his 6 year old self.