Hi Redditors, It is a long story but i'll try to keep it short. I'm(M22) currently living with my sister and we are desperately in need of advice on how to deal with her mentally ill ex-boyfriend.

\- At the beginning of 2021, my sister(F29) was proposed by her boyfriend (Lets call him Adam, fake name obviously). A bit about Adam, he's a smart guy recently got his Bachelor in Public Relation, he's one of the entrepreneurial mindset driven, always striving to start his own business and get good connections with other smart and rich folks. He's currently living with his family 3 hours away from us. 

\- About 3 weeks after the proposal, my sister paid him a visit and witness for the first time seeing him screaming and yelling at his family. It was then revealed that he's been drinking non-stop for the past few months. She tried to remain steadfast and try to calm him down. He then later claim that he does not remember anything. 

**- Symptoms:** After that incident, he keeps on behaving worse and worse: accusing my sister of cheating on him, get drunk everyday and vent to my sister at night. It was so draining for all of us that that my sister cuts him out for a few days not having any contact with him. He then threaten to call the Chief of Compliance where my sister works and will report her for cheating on him with one of her co worker. His family then takes alcohol and phone away from him to prevent trouble, but he's gone completely insane: wandering around the town, making gun gesture with his hand and pretend like he's trying to shoot something, the climax of it all was when he tried to burn his parent's house and got arrested in the process. 

\- His family send him into a rehab program where he reveal that he's been talking to his invisible "friends" and there are voices that tell him to do things which after some research on our ends are symptoms of psychosis and schizophrenia. Rehab facility released him since they cannot deal with mentally ill patients. He was forced to go to a psych ward for 2 weeks and recently got out. 

**- Here's the terrifying part:** He recently got out and the first thing he does was calling my sister, he told her that he is perfectly fine and hated the fact that his family put him through all this mess. He thinks he's super smart and the medicine they are administering on his is to dumb him down so they can control him easily. He wanted to "make babies" with my sister but when she refuse and tell him they are not together anymore, he said "I don't like that, you are my wife". He's also seen to be doing research on some sort of "countdown timer". He also was a gun enthusiast with a shotgun and a handgun, both of which has been confiscated by his family, the point is, he's handy with gun. 

\- **What we did:**  We try to call the cop and explained the situation but they refuses to do anything since he hasn't  explicitly claim he want to hurt anyone or himself. My sister doesn't know how to deal with him or how to tell him that they are not together without aggravating/ making things get worse. The cops has refuse to take action on him and we are terrified and don't know what to do if he comes to our place and demand to come in. I bought pepper spray and a taser as well as a machete in case anything bad happen

&amp;#x200B;

SUMMARY: Sister's boyfriend seems to have psychosis and schizophrenia but he refuse to get medical help. Sister wanted to break up with him but the guy doesn't approved and in the past has made threats to come to our house and our parent's house. The cop refuses to do anything since he hasn't explicitly state that he wanna hurt himself or other. We dont know what else to do if he come to our house and demand to get in. He also possess firearm in the past.

\- If there are any tips on how to talk him down, the correct way to reason with a schizophrenia patient, any resource we can contact i would appreciate it a lot. I feel really bad for him since before any of this happen he was a very good man with lots of ambitions. Its crazy to see what a mental illness can do to a person.