How to move on?

This guy and I went on several dates and we liked each other and I thought he wanted to have more until one day he said he wasn't attracted to me, he said it wasn't anything I did and that it was the best time he's had in a long time, if that's the truth why would he give up so easily bc my heart is broken right now I feel he can move on like nothing even mattered but maybe he just wabted sex
How to move on?
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