Stiles stares, his mouth slack, lips parted, because if he heard that right, Derek just admitted that he 1) read Stiles' journal and 2) was here because he cared about Stiles not dying. He's not sure if he wants to laugh.
"Are you taking tips on inappropriate ways to show you give a shit from your werewolf counterpart, or do you really suck this hard?" he asks, incredulous. "Jesus. I thought I was losing it, or, best case scenario, I was going to be die horribly."