Hi guys, thank you for your replies and insight

We were always just friends and grew up to be very close, people would often refer to is as sisters and over the years we started to refer to ourselves as sisters- we shared every good and bad moment of our lives and she was my centre, someone who I would look to for support and she did the same.
I have one sibling who has severe special needs and communication between us is limited although I love her immensely, I could never have that close sisterly relationship with her so I think I sought it out in my friendships.
My social network was very small and centred mostly around my BP friend so as a result,I've lost all my friends because they fear getting involved and risking the same treatment and feel too awkward to uphold any sort of relationship with me. I've instigated contact with my other close friend twice but it's clear that she doesn't really want to engage in conversation with me, she'll send a couple of replies making small talk but that's it.
So no,I don't really feel like I have a support network at all, my mum has been fantastic but I live on my own away from her and I'm feeling really lonely and quite low at the moment- it kinda feels that my whole support network has been ripped away.
I've been through tough relationship breakups before but I've always had my best friends to turn to; the heartbreak this time almost feels worse and without my support network, it's feels so black.