Ghost- Your babysitter

It was a day when your parents went on a trip to another country for work and left your babysitter in charge of Ghost. The first day he had noticed how pretty you are, so one day he worked up the courage to ask you something

-Hey kid, how old are you?

to which you replied that you were 15-16, he stares at you in surprise at your age, to which you ask him what's wrong, why is he looking at you like that

-Nothing...I'm just surprised by the age