What do you do when your mental issues once again disrupt your relationships?

I have basically all of my relationships destroyed by my issues. SO now I have friends who don't know anything about them. Last night, he broke up with me because of the same issues yet I don't really feel like I can be friends with someone who knows so much about me, knowing that they will also ruin the friendship I have as well. I feel like a bloody warning walking around. He thinks I don't feel the same about him anymore but I do. Im just utterly devastated at this point.