Please help.. I'm Sorry it's long

After a year (August 2012-September 2013) I broke up with my boyfriend and I was in tremendous pain. He turned to a gang, did drugs, drank, and all this stuff and eventually went clinically insane. His parents don't know and no one knows except me. In November we started talking and were an unofficial couple from January until a few days ago when he told me he wanted to protect me and let me go while he went insane again. And I just can't help but feel legitimately in love with him. I've been forced to grow up too fast and live with the things he's done but I just.. I feel like I need him back... But I don't want to bother him anymore.. He says he still loves me but I just want to know I'm his.. Is there anything I can do?