Should I tell him I like him?

La
There's this guy Cooper. He's my best friend. We both settled to being just friends this last summer. Now we've become best friends. We text all the time. But I'm starting to fall in love with him. I think he likes me too. All of my friends think he likes me too. Cooper is always willing to listen to me if I've had a bad day. He's always kind. I'm a little love sick. I need to tell him that I like him. But I'm afraid I'll ruin the friendship if I tell him. And i think he is gonna tell me something. He said "you'll find out in time". We both are kind of shy around each other. Should I wait for him to tell me what he has to say to me or should I tell him that I like him before it's too late?