history: I had never let my son stay the night at anybody's house before. For my anniversary with my husband we really just wanted to have a night to ourselves and thought we should let our son stay with his grandparents. I was nervous but I had faith that they would take care of him well. My husband and I decided we wanted a night to ourselves_comma_ but we've never let our son stay the night anywhere. I was pretty nervous.  How old is your son?
current: He's 3 now, but at the time he was about one and a half. We decided to let him stay with his grandparents that night.
next: I can understand why you felt so nervous. A mothers attachment is rather strong to a newborn. You should get him a gaurd dog when he's a bit older if you still feel that way.