Night with a teenaged boy in the house

[The People]

I am house sitting. The son is coming to spend 1 night and see his dogs. One is fading. I have to get him at the airport. Then the next day I have to turn around and take him back. He will sleep downstairs. And I am so nervous about that part. I have known him since he was a baby but never saw him during the boy to man years. Well I saw him a few months ago but... I am just soooo uncomfortable. I cannot explain this to the family. They would be horrified that I am afraid of spending the night with their boy. But I cannot make the feelings go away.