2: Metal is ruined by Amy It's doesn't mean interpreting Amy in a nasty or naive way
Metal is a robot who can't feel emotions, and Amy is a wonderful girl who considers love to be the highest value When she speaks of 'love' to Metal, he has to come to terms with a concept he can't understand, but that clearly exists It's too much for him. TOO HEAVY.
Even if Amy speaks and acts to Metal as she treats others, it could all be fatal to Metal's circuitry
1: And this holds even when the position is reversed Metal is a robot who can't know love; he can only imitate it, and that can come across as a kind of horror to Amy