[Well, now he's confused, and it doubtlessly shows in his expression. Because 'I like you as an interesting toy to pick apart' isn't something that crosses Jon's mind. Not with Dorian, specifically.]

You want me to look at you like I want to eat you?

[He assumes that's more or less how he looks.]

Because that's what's happening here, Dorian. We're not having a chat, I'm feeding on you. Your horror. Collecting another piece of you for the Watcher. People aren't supposed to want that!