Why wouldn’t he commit to me?

We got on really well, seemed to have similar views on things and had good chemistry. By his own admission, we got on really well and were attracted to each other. And i could tell by the look in his eyes that he fancied me..
We were both good looking, I had a good job and he was unemployed which he seemed to be insecure about. But he was the one who ended it with me without really giving a proper reason.
Since then I've felt massively insecure and trying to search for the reason why he wouldn't commit despite the fact we got on well and were atrracted to each other.
Why wouldn’t he commit to me?
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