Why would a man confide huge secrets to me then disappear?

Anonymous
Recently met this guy a few months ago. Started going on a few dates a month ago. Then this week we went out and it was the best date yet. Had a fantastic time. On the long drive home he confided some deep secrets that he doesn't really talk about. Next morning he completely disappeared. If he wasn't interested why would he confide in me? He hasn't deleted me off social media either. Just no texts or calls. I know he's got some personal issues and suspect an ex is causing problems too. But why not just say I'm not interested? Or why confide? I'm pretty hurt because I really liked him.
Why would a man confide huge secrets to me then disappear?
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