Hi all,
So I need a bit of advice. This is a very long drawn out story, so I'll try my best just to share the highlights.
Basically, about 4 months ago, my younger brother (21) who still lives at home, met a girl online and invited her to come and stay over one weekend (she lived several miles away)...and then she never left. My mum wasn't pleased with the situation and asked her to leave on many occasions but she refused, giving countless excuses. Anyway, it transpired quite quickly that she has a lot of mental health issues - she (apparently) suffers from borderline personality disorder, and was self harming. Almost every day she would phone the police or an ambulance to the house whether it was needed or not and my mum eventually got sick of not being able to get the girl out of her house and all the drama that was ensuing and moved out of our family home into my grandparents house, leaving my brother and his gf to it. My brother became very depressed and wasn't coping, but let her stay. Over the last week or so, things finally came to a head when my brothers gf broke my mums wrist, took a bunch of tablets, put her head through our wall and attacked ambulance staff, resulting in a short stay in hospital, and now, a psychiatric unit.
In spite of all this (and much more), my brother is still with her. And whilst I understand ultimately he is an adult and it is his choice who to be with, I am increasingly concerned for him. She is on social media all day posting (no exaggeration) around 50 statuses accusing my brother of cheating on her and blaming my mum for her mental health problems, and she has started messaging me threatening my family and saying she is going to get the police to visit my grandparents because my brother is in danger. My brother himself has told me that she messages him non stop with accusations and when he defends himself she starts sending pictures of her choking herself and telling him he's the one driving her to suicide.
This is all deeply concerning and she has now decided to book them a holiday in 2 months time, and I genuinely fear for his safety.
I've tried talking to him but he just seems to be acting like a lovesick idiot. I really don't know what else to do?