Can someone explain this? ghosting situation?

we’d been up until 4 am. Then texted a bit the following day and he didn’t reply then said sorry I fell asleep super early. Which I expected since we’d been up so late
Then today said yeah I’m free these days how are you today and now isn’t replying to me

For context we’ve had one date. I went to his we had sex it was good and we had a good time and then todays he replied that one message then nothing

Why ask how I am if you plan on ghosting?
Can someone explain this? ghosting situation?
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