Sould I dm him?

I met this guy at and out of school event and I really like him. The problem is that he never told me his name and he has not shown up to school in 3+ weeks. I did find out his name via yearbook and I a friend showed me his ista. So should I dm him anonymously and ask if he coming back and mention who I am or is that creepy.

Updates
+1 y
So I was not able to dm him since he has his account set up not to receive dms from people he does not follow. So I left a message on his old post saying "Logan, this might seem weird but please look a my profile and message me thanks". Wish me luck and give any advice you may have please.
Sould I dm him?
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