person A: 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. 
person B: How old is your son?
person A: He's 3 now_comma_ but at the time he was about one and a half. We decided to let him stay with his grandparents that night.
person B: 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.