What does he mean by this?

So I have been talking to this guy for a few months. We used to flirt quite a bit. Some connection is there, but we’re just friends at the moment. Anyway, it has been a while since we last spoke properly because he's been busy with work, and I have my mid terms. Anyway, we’re talking today and he just randomly asks “why don’t you tell me that you miss me?”

what does he mean by that? Lol.
What does he mean by this?
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