PLEASE answer this question, how do I make my bf better?

he is cutting and just breaking down. He is an emotional wreck and refuses to get help. I love him so much and I can't just abandon him in his time of need. Its like he has a meltdown everyday and its stressing me out SO much. I cant help him if he doesn't want to be helped and if the school counselors wont do anything and neither will his parents! He is going to talk to the pasture of his church or something. But he refuses to get counseling or help. He cut himself really bad and then put rubbing alchohl on it just to hurt himself even more(not becuz he wanted to clean them).He is struggling in school, he is always put on the back burner while his sis gets the spot light, and it seems like being mad at him for even 5seconds sends him into another meltdown. My parents say i need to let him deal with things but how can I when he is calling me and stuff cuz he needs someone to talk to? I keep getting pulled in and I dont no how to stop all this. PLEASE any advice would be much appreciated.