Should I keep likening him? Should I say something to him?

I am 16 years old. I've like this guy, Isaac for only a few weeks. My friend, Adri, said that I should try and find 15 reasons why I like him. I found 10 but only 3 big ones. He's funny has great hair and I'm comfortable being around him. She asked what we have in common and I really don't know because I don't know him all that well... I mean on a basic level we share the same religious beliefs and we both play piano but other than that I really don't know much about him yet. 

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