Hi I just really need some help with this. So me and my now ex, we were inseparable, for context she had already been diagnosed with bipolar disorder at the time and I tried my best to help, everything was going great until I started showing symptoms of bpd. So I was getting jealous of everything and everyone I was needy and I got so angry sometimes, I had my episodes and I needed constant reassuring. It got so bad that I lied just to get her attention and I would threaten to commit suicide if she ever left.
So it was this for a while, she had to put up with me and at the same time deal with her disorder and I did the same. I got diagnosed with bpd and when I told her she said okay let's figure things out but that was a lie she didn't even try and learn about it. She just she couldn't take it it was hard but I was trying my best really. 
She was my fp I literally lived for her everything I did was to please her and know what? what am I to do? 
We only completely broke up like a month ago. It started 2 months ago but I kept begging for her to stay and that only made things worse. 
I dont know life without her we met when we were 14 and we are turning 19 this year so I really don't know.
I was hoping she would come back i can't keep on going without her. Even tho our relationship was a little toxic I had and still have so much love for her in me and it hurts so much knowing she has moved on already.
If you guys could help me and suggest some things you do or did to forget about your fp and move on with your life I would appreciate it. 
I know things get better but I can't see that happening any time soon.