How do I start a conversation with an antisocial boy?

First I need to say that this is my first time asking anyone about this and English is not my first language. So there is this one boy in my school, he`s a year younger then me but I kinda like him. The problem is that he`s anti-social to some degree. He doesn`t have any social media, he doesn`t talk to anyone in the class or anywhere else, he sets alone and is just a loner in general. Usually I`m a little shy but I want to talk to him so does anyone have any advice?
How do I start a conversation with an antisocial boy?
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