Winrus stood frozen, the ice prince had heard everything that he said. It made his heart skip a beat, he was scared and worried over how to explain everything that he just said.
His body shivered from the fear of accepting his reality before an audience. The man right in front of him is royalty and as such someone of his status should watch what I say or think.
The fact that his truth was discovered so early. It made him nervous, scared even.
"What are you doing out here?" Winrus in an attempt to play it casually. Attempt to pretend like he had no idea what the prince could have heard.
He was tasting waters to see whether or not he was being paranoid, or Amaru did hear what he had to say while he whispered to himself.
"I came to see you. I... Well.... I wanted to ask you a favor but I'm fine without it," Amaru said.
The way he spoke how cautious he was, made Winrus believe that the man overheard everything that he said.