What should I tell him after he ghosted me?

he ghosted me for about 14 days and he sent me a message saying "Hey".

I replied with a "hey you"

but I miss him so much. We met online and live far away from each other which is why I understand why maybe he took days off from speaking to me. But after I replied with Hey, he hasn't replied since then. It's been two days. Any advice would be great

What should I tell him after he ghosted me?
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