My god i didn't even realise this was something I would need to think about...
My answer would be No to sleeping out but *maybe* to having someone stay. that goes for both the boys & girls in my family.
I would have been 15 when I was staying at my boyfriends place & I am pretty sure Mum had to be clued on to what was going on as he was 21 & lived on his own. Wow, I have never really thought that hard about that. My Mum was pretty cool!
But me staying overnight had more to do with some issues going on at home then it did with me wanting to stay out. But thats another post!