Why would a guy plan a date then cancel a few days later (not last minute)?

He pursued me first, and asked me out soon after. I said yes, and for him to come up with the plan, he said of course he would. A few days later, he texts me asks me if I would be free the upcoming weekend, and if that didn't work to let him know. He planned a proper date, arranging place/time/etc. We had a couple brief text convos the few days after, nothing special until he texts me that he doesn't want to meet anymore (it wasn't last minute, it was about a week before our date was scheduled for). He tells me he just got out of a relationship and isn't ready for another one. He tells me im so beautiful and he loves my personality and we vibed pretty well, he seemed super into our convos. It makes no sense, why would he change his mind out of nowhere and waste my time?
It was an ego boost to him
Other (please explain!)
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Why would a guy plan a date then cancel a few days later (not last minute)?
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