How to talk to your crush when you have no classes with him?

So me and this guy were really good friends last year cause we had English together and sat beside each other. Well this year we have no classes together so I never get to talk to him and I miss talking to him so how should I talk to him now and should I try talking to him in the hallways? And also what do I talk about haha
How to talk to your crush when you have no classes with him?
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