Question

When the narrator asks the boys about their plans , they are shy why don't they disclaose their problems

Answer 1

because they dont want to reveal their plans and they dont trouble the narrator 

Answer 2

The ques. is from "Two Gentlemen Of Verona" and the boys didn't wanted any stranger to intrude into their privacy. The boys didn't wanted to disclose their plans in front of the narrator who was a stranger for them which is common. They were feeling evasive as they didn't knew the narrator and were strong enough to deal with the situations of their life as they were hard working and mature too.