Most Helpful Guy
I agree with you. Just because you have a mental illness, doesn't give you license to act and behave immature toward anyone else. I fought that battle with my step kids as they were growing up. They knew what was right and what was wrong. I did what I could to hold them accountable for their actions and let them feel the consequences for their actions.
If he throws things on the floor, leave them there. If someone steps on the stuff, so be it. If he ignores you, just go on with what you planned anyway without him. When he gets mad for not including him, let him know had he said something when you asked, he wouldn't have been left out. And so on... Actions have consequences.
Most Helpful Girl
It absolutely does not. I'd draw the line in the same place as you would for someone who doesn't have those issues. If you let him keep treating you that way, he's going to keep doing it and pushing until you push back. Don't enable him.