Breaking up?

Danielle
I don't even know where to post this I just know I have to.
I suffer badly with bipolar and anxiety, I've been in my relationship for three years and he's been a god send, he's helped me get what I need from the doctors blah blah blah,
But the past year I've been awful, I've been suicidal I've been nasty, violent and so much more. I do rely on him a lot (not financially I work) just emotionally, today I broke down when he asked me to leave his, bc he has to go to work and his mum was home, we don't get on due to her not believing I have bipolar. Anyway, I kicked off begging to stay as I did a night shift yesterday then a six hour shift too, he couldn't as his mum said no. We argued now he has said he's had too much and wants to leave me? What do I do, I'm trying to get better I'm on new meds I work 48hrs just so I'm out and not unsociable.. 
I admit it's mostly my fault but I can't lose him, not when I'm this unstable I'm scared what I'll do to myself..
Please someone help me? Some advice?