I really don’t understand being ghosted

This artist older guy messaged me on Insta, he was sending me messages all day, and sending me voice messages which I thought was weird. The last message he sends it’s a long voice message about how happy he is about this new connection. I reply a short text message talking about my bipolar, he is bipolar too or use to be he says, and now he hasn’t replied for two days. I have never been ghosted before, really makes you wonder what you did.