Sleeping next to someone on a large bed is no different from sitting next to them on a bus or in a movie theater. You have your own space; the other person has theirs. It's not like you're going to have sex just because you're within each others' proximity! I don't get the fuss, really. From a moral perspective it's inappropriate, yes. Since DN are married, that aspect is eliminated. From a scientific perspective, that curtain is unnecessary because you ain't gonna turn into an animal overnight. 😆