I've slept over at a yf's and had a yf sleep over at my place. Sleeping in the same bed has never come up. I guess I have not really thought about having personal rules for things that I know the answer to right away "no". But like I said I prefer not to have set rules like that other than no sexual stuff because what if someday I have a young yf who had a nightmare or something? Then it might be appropriate to do so. I don't need to have strict rules and see no point in having ones that are going to be real flexible anyway.