[ Lupin does not know she's a robot!! He also doesn't know what a robot is... but even if he knew both of those things, he'd keep calling her that. She seems perfectly human to him.

Her comment is also too cute to resist. He is now more convinced she's a lovely lady than ever before!! However, he remains a gentleman. ]

I'll stop if it bothers you. [ even though it's true... ] There's no need to apologize, either - am I that intimidating? You can talk to me whenever you like.