So basically, my brother is 5 years older than me but a year below me in uni. My brother has been dealing with mental illness for most of his life, he has pretty bad anxiety, depression, and ADD and barely scraped out of HS with decent marks. He was in uni for a half a year before he tried to commit suicide, and after that he pulled himself out of school to focus on his mental health. This went on for years, and in this time he was really dedicated to battling depression and trying to become the best person he could be. I was fucking proud of him. 

Fast forward to September, he's a 24 year-old freshman going into a Com Sci program at our local university, and I was going into my second year of Software Engineering. He said he felt really nervous being back in school and relied on me for support, and I gave it to him to the best of my ability. He found a girl in his program who he liked, some cute, fresh faced 17 year old Korean girl. They dated after talking for a while and he seemed happy, but I was grossed out that my 24 year old grownass brother was dating a teenager. I held my tongue though because this was the happiest I had seen him in years, but I wasn't happy about it.

So now, on Sunday she decided to break up with him because she said felt more comfortable with guys her own age and that he should move on. The motherfucker hasn't left his room in 3 days and has reverted to the same self sorry sack of shit he was before his therapy. His fucking wailing has been preventing me from studying for my midterms, and I went to his room to tell him to get over it. He continued to wail saying shit like "I'm fucking worthless!" and "I'm gonna kill myself!". I was so frustrated at him that I yelled this to him word for word "SHUT THE FUCK UP YOU WORTHLESS SHIT AND DO IT FAGGOT, NO ONE FEELS BAD FOR YOU!!!". I had enough of his self pity and I was angry at the fact that this guy basically wasted thousands of dollars of therapy money over some girl he knew for a couple months. 

This was the first time I actually yelled at him and he took it to heart. He looked shocked and I quickly made sure to make myself scarce. It's been several hours now and he hasn't made a single noise from his room. He's locked the door and won't respond to my numerous apologies that I've said. AITA reddit?