What would you do?

Ok so I’m going to make this short and sweet not to many details but enough details to let you answer. So I have a crush a MAJOR crush it’s gotten to the point where I can only think about him all the time 24/7. I’m not good at keeping a secret especially something like this I always tell the guy and if I get rejected ok but the issue is we’re close and he’s close to my family as well there is so much at risk but I feel like I can’t start to get over him until I tell him. Another thing is that he very obviously either finds me attractive or he likes me or something like that. Please what would you do and if you would tell him what would you say?