When guys says this?

I am not good when it comes to pet names or when guy uses names. Known this guy for couple years but we finally meet in person. I was a weekend house guest. He is gentleman we didn’t get physical. We both are looking for somethings serious and don’t jump. By end of the first night when I went to the guest room to go to bed he said good night miss. He used it again. And same when we text he tells me to rest well miss. I am just curious is this good thing or bad?
When guys says this?
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