How to reach out to my crush?

I have noone to talk about this with. I met him on vacation and ik there was smt there. But I've been back for a month now and we haven't talked (we are live pretty close like 30 minutes drive distance). I want to reach oht but idk what to begin with to seem casual. It will seem weird reaching out after a minth but I have nth to lose. I really want to do it. Idk how. Help? I'm 17 so I don't want to send smt that seems typical and old like "hey how are you" whatever. Help???