He left me because I tried to kill myself

So, me and my boyfriend were together 5 months, he was my first boyfriend and my first love. I was diagnosed with psychotic depression and Disociative Personality Disorder when I was 16 (now 20) He knew all this before we got together and was really supportive. Two weeks ago I overdosed and slit my wrist, he was so good about it and came straight over and took care of me. Four days later he text me and told me that we both had things going on that we needed to sort out, in other words, I needed to sort myself out. He wouldn’t answer my phone calls and didnt want to talk about it. He broke my heart. He was the only support I had as well so he’s just left me to handle all of this alone. I am still madly in love with him and I still think about him every single day, I miss him like crazy. I know what everyone will say, I don’t deserve him, I should forget about him and all that. But he broke me into a million pieces, so not only do I have to deal with my depression and self harm but I also have to deal with my first heartbreak and I’m so alone. I need him back, I need him so bad and I dont know what to do, I’m at such a loss. Please help.