Why is he texting me now?

Long story short, I was talking to a guy in September and went on a couple dates. We were suppose to meet up on a 4th date but he ghosted me. He never replied to my text. I never texted him again and delete his number. At midnight, he texted me happy New year, didn’t recognize the number and asked who was it. Figure it out it was the guy I was talking to in September.
So my questions is, why did he text me at midnight today if he was the one that ghosted me.
Why is he texting me now?
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