What does it mean if a guy says he has a yearning for you?

We have been talking for less than a month and he has told me he has a yearning for me. We haven't met yet but really wants to meet up with me. He would tell me he misses me, wants me etc. He does realise before he was pushy its just that he's really excited to meet me.
What does it mean if a guy says he has a yearning for you?
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