I means he makes me so sad because he is my friend from SAME School.
And he scammed me....
Why the hell are these on the list?
Kill him.
Slowly make him realised he is wrong.
If you want my advice, don't bother with him anymore. Unless you can go to his parents and explain the situation to them, there is really nothing you can do other than make the situation worse.
If he scammed you,
he is not your friend.
Don't talk to him anymore.
Don't hang out with him anymore.
If he really is your friend, and he scammed you by accident, he will notice you cold shouldering him and come and talk to you.
Then you explain why you are angry with him, and hopefully work it out.
If he still insists on keeping your money/ doesn't bother talking with you, just don't associate with him anymore as he was just using you.
Retaliating for something like this never did anyone good. All it can do is possibly get some people hurt.
And in the future, unless you completely trust a person/want to give them a present, don't invest money into things they are directly in control of.