How do you get a guy to message you on social media?

So I stumbled upon this guy on TikTok that I really like. We are the same age, live in the same area and like the same things. I followed him and made a casual comment on one of his videos and he liked it and followed me back. Now and then I’ll make a comment or like a video but not too often. I’d really like to dm and talk to him more but I’m a little scared of making the first move.
How do you get a guy to message you on social media?
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