Help!

You didn't say if he is your age or a little older. Boys your age differ on how they react. He may smile at you. Or he could playfully tease you. If he is the shy type, he might not do anything. I think you could just try making small talk. You might have to start the conversation. Get him talking and you two will get to know each other. You will also get an idea if he likes you or not. Listen to friends opinions, but trust your instincts. Good luck. Don't try to rush, you have time. :>)

if the guy scares at you and smiles at you
or touches you,thats a sign.

Depends on what age he is.If he's five, he'll hug your leg and never want to let go. :D If he's a teen, he may give you subtle little hints like giving you gifts or hugging you a lot or maybe even staring at you every time you see eachother.If he's into you, he'll want to spen as much time with you as possible, unless he's shy.