I often flirt with this guy I met at work and I don’t know what should I do to make the situation move, any advice?

Last time i saw him we chatted and teased each other a lot, he often stands beside me and really near, even in large groups of people. Before going home he even hugged me really tight and way longer that a normal bye bye hug, and after this i greeted him and he hugged me again by the side, by putting his hand on my waist and resting his head on my shoulder, i feel like this is a clear sign of his interest but I don’t want to be delusional. We rarely chat with each other on messages so i’m not sure if i should reach out to him or how, i know that he is really shy, so i would like to move this forward but without scaring him off. Any advice?

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I want to specify that i met him on a specific project which already ended, so it may be that we won’t even work together anymore nor with the same people, i was an extra in a team he was an extra too
I often flirt with this guy I met at work and I don’t know what should I do to make the situation move, any advice?
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