I sit by my crush at lunch. How to talk to him?

This year freshman took our table causing us to move. I end up sitting next to him. He talked to me today but I was a little nervous to look into his eyes for a long time. How can I talk to him. Half the table is his and his friends and the other half is mine's. Do I tell him my name or what him? He is in the 12th grade I'm in the 11th so this is my last chance to talk to him.
I sit by my crush at lunch. How to talk to him?
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