I know. That's why I trust you.

[He's careful and slow as he gathers his brother close, holding him if Ariel lets him.]

You won't. Don't be afraid. Because you are't someone who will hurt others for enjoyment. You won't let that echo do it, that wasn't even a sting Ariel. I absolutely believe you would do anything to stop from hurting someone. So I know you won't.

You just have to realize it.