My 13 year old dd and 9 year old son share a room. They have bunk beds and split the closet and dresser. We live in a 2 bedroom 1 bathroom. Peoples reactions when they find out range from indifference to shock/horror that I would have siblings of the opposite sex share a room. My ex husband even *tried* to use it against me to get custody.
I see nothing wrong with it and plan to continue to have them share a room until we save the money required for a down payment on a larger home. It is perfectly legal and I am at no risk of losing custody over it. If the judge would have said otherwise I would make other arrangements.
This is my confession.