Merlin stopped, his attention turning sharply to Arthur for a moment. He stopped his rambling, and dropped down to sit on his bed, holding his head in his hands. It took every ounce of will power he had to keep quiet. After starting to tell Arthur, every secret he'd kept was threatening to come spilling out.
He didn't dare try and speak because he'd knew he's start rambling, and he couldn't really bring himself to look up at Arthur either. So Merlin just sat there, waiting for Arthur to speak, or for him to leave. He didn't really know what to expect at the moment.