What does it mean when a guy randomly texts you?

I woke up and found the guy texted me twice while I was sleep. He texted me to ask if we were meeting up in the morning when we don't normally do. And then he told me he just got back home around midnight. I woke up normal time and told him I'm glad he's back safe. Then he immediately texted me back. I thought he would be sleep but I guess he was waiting for my message?
What does it mean when a guy randomly texts you?
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