[He dislikes that look of realization. And even more, he hates that she won't just keep her mouth shut and instead has to just lay it all out on the table like that. Ugh, the mortifying ordeal of being known.

His free hand darts to his mouth as in in shock as he plasters on a horrified expression.]

Woah, you think some of them could be drugged or something? That's super scary! I can't believe you wanted me to test them for you, you jerk!

[Clearly, she's making a point of throughly sucking on the sweet to ensure he knows she's not faking it. But he dislikes being seen through like this, especially when he's this on edge, so he'll just...pretend not to know what she's doing. His disgusted expression says it all, really.]

Were you trying to make that look sexy? Ew. Just so you know, I'm not interested.