i just found out from someone else my best friend likes me back but...?

You can flirt with him now. Everything is so much easier. You don't need to tell him that your friend told you until after you're dating him, and then he can be thankful because it's all because of that friend that he has you. So flirt with him and make him like you even more, and then admit that you like him and ask him out. It's perfect!

Hope this helped!

Okay first of all if you live half way across the world, it'll never happen, you and him that is, sorry for being so harsh, but it's the truth. I'm not saying you guys should stop talking to each other just because you live far from him, I'm just saying long distance relationships where you can NEVER see the person doesn't work, so it's only natural he'd fall for someone he sees a lot and they talk and do things together upfront, what you need to do is find a guy who lives closer to you =).

Omg he won't be mad... You're obviously in middle school because nobody would care about this above sixth grade. Just go ******* ask him out.