From the question he now knew that Stephen had guessed his secret.

Later, his students guess his secret when they read about the wound in a newspaper.

But tell me, Joe, how did you guess our little secret?

A few of the women on the shop floor had guessed her secret, though they'd never discussed it with her.

He was not apprehensive lest she might have guessed his secret.

If he had guessed Peter's secret, he never let on.

Then a fear came upon me that people might be observing me and would guess my secret.

She continued to stare ahead, wondering if he'd guessed her secret.

By his expression I could not tell if he had guessed her secret before this.

He wants people to think he's cool and hopes they won't guess his secret - he likes boys.