I've never had a problem with any of my kids bunking in with their girlfriends/boyfriends whenever they come to stay. To be frank, I don't even notice it. They've only done it when they've been in long-term relationships. None of them ever brought home a "one night stand", which is something that would really upset me if it happened.
I'm curious that this surprises some folks, not just in the JW/ex JW community either. My Mum is totally outraged by this, however, she is a dub and in her 80's too, so I guess it's not too surprising. The "Not under my roof" should be my philosophy according to her.
It doesn't bother me one whit if my kids opt to share a bed with a partner in my home. I've never seen God as someone who is preoccupied with what humans do with their genitalia. Maybe I'm just beyond all moral hope. (I must confess, though, that I don't want them right next door to my bedroom.)
Englishman.