DESPERATE Need advice about a weed problem. (kinda long..)

[serendipity.x]

Hi there. I'm looking for some advice for how to get someone to see that they have a problem with weed. How to help them to see how much they're losing and destroying by continuing the way they are.

He wants us all to accept that he smokes weed a lot, but how can we when he
- chooses to buy weed over food
- buys weed without paying for it, from people he's only just met ("ill pay you later" kinda thing)
- wants to be permafried
- uses his parents money to buy weed, when they're in debt
- almost got kicked out of his place twice for it
- is failing school, and if he fails one more class he's kicked out
- goes to class high, even the one he's failing
- he smokes 24/7, wherever, whenever
- lost two of his best friends
- lost his girlfriend, the girl he wanted/wants to marry
- he's losing more friends as we speak
- he surrounds himself with it, and people who smoke it constantly (as well as do other things)
- lies about it constantly
- is willing to let people who he cares very much about walk out of his life
- is totally stone faced (he never looks unhappy, but he never looks happy either)
- when he doesn't have it, or if it's been a bit...he gets aggressive and hostil
- he is in total denial
- I'm kinda the only one still trying. all of his friends have talking to him, but they all stopped now.
- i have tried threatening to leave. i have tried leaving. ive tried yelling and fighting about it. ive tried sympathizing, and asking him his side. ive tried compromises. ive tried talking to his parents. his friends. weve had physical fights. ive sat there, in his arms, shaking and crying for hours. and he still didnt get it......

I'm at a loss. Please help me. I don't want to hear "give up on him, there's nothing you can do"
I'm aware that it's hard to make them see. And I know that they won't change until they want to...but....I know there is something. I love this boy more than anything. And I know he loves me, but right now the weed is more important.

Please I am begging you.