What does it mean if a guy texts at 1am saying?

Anonymous
What does it mean if a guy texts at 1am saying?

We've been chatting for a long time like 2 months non stop

He text saying "are you coming out? xx"

We planned a sleepover last week I asked during the week if it was on he didn't reply back he text me now at 1am saying "U coming out?"
Is he just drunk?
Should I reply what do I say back to him?
What does it mean if a guy texts at 1am saying?
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