I like this guy in school, and I told him I like him. He didn't yet tell me if he likes me but he did smile when I told him and he doesn't ignore me and we still hang out as friends. How do I know for sure if he likes me? I know most people would say '' Just ask him . '' but I'm very shy.

Why do you need to hear the actual words? His actions say he likes you. (Guys are big on actions, not words. And be very wary when a guy's words and actions don't match.)

Well, he smiled at you when you said you like him, so may be he likes you. But I am not sure if there is more than a ''like". If you want to know you have to ask, but take your time and ask him after you know him better. :)

Where and when do you hang out? You can't be too shy if you are friends that hang out right?

He's still hanging out with you. Enjoy the friendship. Does it need to be labeled? How old are the two of you?

Yer I'm pretty sure he likes you if he didn't when you told him you liked him he'd stop talking to you so ask him out or say something like " if I asked you out what would u say?" Also if you ask him out and he does say no just say it was a dare xxxxxxx good luck xx

Being shy is a terrible thing, it will hinder you for your whole life and you need to work on it. Join a group that internist you and take part I know it is hard but if you start among like minded people in a field you have knowledge in it will give you positive reinforcement and help you grow.
Find him and ask him if he likes you also. Even if he answers no you still confronted your fear of interaction and rejection. I lost out on a lot of great stuff beause I was shy and getting through it was hard especially the first steps, but the reward has been life altering in a positive way.