history: I was unsure about letting my son go to a sleepover since we didn't know the family very well.  It was hard to decide what to do. My son was invited for a sleepover but we don't know the host family very well.
current: Did you decline? I would not feel very comfortable until i got to know the family. 
next: Yes, and it was hard to decide because my son really wanted to go.  But you can't just trust anybody these days.