What does it mean if he calls me his queen?

We haven't met yet and its only been a month but we have talked about the future together, told each other we really like each other and that he likes me more and more each day. He compliments me a lot, asks me questions and makes me feel really good. He said he wants to make me feel good make me happy and want to spend time together. He said he only has eyes for me
What does it mean if he calls me his queen?
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