My schizoaffective disorder. We started dating in high school. I went off to college and she had a year left. I started slowly slipping into madness throughout that year. She enrolled at my college the following year. My behavior became really crazy. I wasn't abusive or mean, I was just acting completely insane. Got committed to a mental hospital. Stayed there for a bit. Got out and she was relieved that there was an explanation and was going to stay with me through it. Problem was I was very unstable and bad off. I had serious flat affect I had loss the ability to feel or express any emotions. I was like that for a good year and a half before I got to where I would crack a smile occasionally. As you can imagine being with someone who is like that would be very difficult. I got decommited to a mental hospital a few more times but the last time was the final straw. I got committed and they labeled me unfit for society. They had a meeting with her and pretty much told her that I was an extremely dangerous person and how when night falls I become really unstable and it is dangerous to be around me and how she should never be anywhere near me at night. I was in the room when they were explaining this to her. She told them how I wasn't like that and I would never hurt her and that they were wrong about me and she did mean it. However this had been three years and I wasn't showing signs of getting better and I guess it broke her. She broke up with me a few months later, but her and I have remained great friends despite that as I never faulted her for breaking up with me or resented her for it as I was simply just a burden to her at that point.