I have study hall with my crush...HELP?

My crush and I share a study hall, but I have never talked to him during our free block.* I know it's a very valuable time to get to know someone in study hall because no one does anything anyways. I guess it's only purpose it just to talk to people. I don't have any friends in the free block that I can hang out with except him. But we're not close friends or anything, but I want to become his friend and get over the crush I have on him.

* I have talked to him before, he knows I exist and stuff like that.

So should I talk to him?

WHAT should I say and HOW do I start a conversation?

HOW do I approach him in a friendly way?

HELP ME PLEASE

Thank you!
I have study hall with my crush...HELP?
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