"Do you love her?"
Nagira's eyebrow was raised, his eyes saying that it didn't matter how Amon answered, because he already knew the answer.
So Amon paused and thought his response over carefully. Not because he didn't know the answer, but because if he said no, he'd look like he was in denial. If he said yes, his brother would know his weakness.
Amon wasn't supposed to have weaknesses.
He didn't trust Nagira enough not to tell Robin. He couldn't say yes. It was a horrible idea to say yes.
"Don't worry," Nagira smiled, "I won't make you say it."