My guy friend calls me" Snow White"?

he was my friend which I rejected his "more than friendship" request once but we stayed in friendship zone and he could easily deal with it. but he calls me snow white times to times...should I oppose it and asked him to stop?

we got so close and I'm scared that I'm sending mix signals to him that he started flirting like this... what's your opinion?
My guy friend calls me" Snow White"?
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