When did the twins stop sharing a room. We only have a 3 bedroom house and I know eventually I'll have to put K in the room with DD1 but I was hoping to prolong it as much as possible (she is the one who had the most changes with the twins and I feel bad for her). I dont think this is true but. Coworker told me that it illegal for boys and girls to share rooms after the age of 2. Has anyone ever heard of that? Do you think around 3 is a good time to separate them?