How to tell a guy you like him nicely and not scare him away?

I am talking with a guy recently I have been liking him for a year!! He is a good guy family oriented etc I truly want to know him more. But I realized our messages are so formal like work related research related school related. I want to imitate and tell him I like him but not this exposed in his face message.. I’m trying to find ways how to let him know I like him ! Can you guys help me 🥺
How to tell a guy you like him nicely and not scare him away?
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