He calls me sweetheart. Americans, please help?

isaynononono
He's American and I'm brazilian. We have a long distance thing going. Everytime I call him handsome, he calls me sweetheart. For me, that sounds something like a grandmother would a grandaughter. Is it normal a guy calling a girl that? Is that a thing? I would think that something like "honey" or even "sexy" would be more compatible to my "handsome".
He calls me sweetheart. Americans, please help?
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