Guys do you get threatened when a girl treats you nice?

So I'm in the process of talking to who might actually be my soulmate, I'm always nice to him were long distance not dating yet but we already act like we are, anyways I say the nice things but he said that being treated bad for so long than finally being treated right feels threatened even if it's not. How do I make him feel safe if my nice is off-putting?

Guys do you get threatened when a girl treats you nice?
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