My crush left me on seen and on delivered and hasn't replied, this was about 6 hours ago, what could he mean by that?

We have streaks, friends in common and we make eye contact way to often for it to mean nothing, and we have talked a little in school, but when i snap him or text him his ice cold, what does this mean?
My crush left me on seen and on delivered and hasn't replied, this was about 6 hours ago, what could he mean by that?
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