I clearly picked some v poor friends as a teenager..
Schoolfriend and her boyfriend and his best mate were my drinking buddies from 17ish on (the lads were 22ish)... they'd come round to mine, we'd get ready, go out, crash back at mine after as I lived conveniently closer to the pub than anyone else... this went on a while, all good.
My sister moved back in and I moved into a caravan on the drive, not ideal but anyway, still good.
My schoolfriend had known me a long time by this point, since age 11. She'd heard about my sister, she knew my sister could be nasty, violent, dangerous, lie.. she'd seen some incidents...
Anyway they turn up to collect me one evening, and find me not at home, sister at home, weirdly washing some white sofa cushions she's 'accidentally bled on'.
She tells THEM ive ditched them to hang out with someone else, they accept this (mm ok) and go to the pub with her until kicking out time.
Meanwhile, I am actually in hospital having my head stapled back together, with a big gash in my scalp and potentially a skull fracture... and then off to the police station to make a statement. She'd thrown a small dumb-bell at me in an (up til that point, purely verbal, I wasn't even standing up!) argument, hitting me in the side of the head. It knocked me out for a second and then my head poured blood all over our white sofa and everywhere else. She had bolted and hid, I ran out of the house SCREAMING... a neighbour came out to see and rescued me..
SO far so dubious but... they return from the pub, I am sat there with my head bandaged and stapled, feeling pretty crap, I tell her the police are looking for her - she laughs.. THEY LAUGH.
I tell her seriously, the police will be round (my mum was in the other room and phoned the moment she returned). They still laugh 'nah, don't be soft'...
She'd apparently eventually told them we'd had a row and id run off in a strop...and I might have fallen over.
They, KNOWING she was a violent liar... believed her, and not only did they take the piss that the police were coming, they still didn't believe me when the police showed up (no, she didnt really throw that at you, nah, must have been a joke), nor when they took the dumbell, nor when they took my FUCKING SISTER AWAY IN A VAN...
And then spent much of the night till my mum lost her shit at them and slung them out, trying to persuade me NOT to press charges, not to take any further action, just drop it.
Some fucking friends.
I was in the end, bullied into letting it drop, though not before sister spent 3 days in cells (bank holiday weekend!) and then was seen before the youth courts. Even the police bullied me 'it will ruin her life if she has a record now...'
Not a single apology when the truth came out, that she had attacked me, she had smashed my head open, left me out cold soaked in blood and hid whilst i ran out screaming, she had then gone off with them and fed them a bunch of lies... nothing.
A year or so later - a good friend (so I thought, again known her years) told me if I ever needed anything, any drama from my fucked up family, anything, ring her, she'd come and help.
So I rang her at 1am from a police station, terrified out of my fucking wits, homeless having been threatened with rape and murder, so I had run for it to the only place of safety I could think of... (police said they could send someone to the persons house but it'd be his word against mine...).
She was too tired, she just wanted a quiet night in, sorry.
You live and you learn eh!