My son asked me if he could sleep round his friend's house today and I said whos house. He said this girl. I said that I don't think boys and girls should be sleeping in the same room this age but my son said that him and the girl were just friends and have known each other for 3 yrs. They are both mature but I wasnt comfortable with letting sleep in the same room so I told him he can't go. He is really upset about it. What would everyone else done in this situation???