I'm starting to wonder if it's the right thing to do to end my relationship of almost 3 years. I've put him through hell with my emotional instability. He made a comment when I said that I felt happy the other day saying that it wouldn't last very long. And he has made other comments in the past about me being depressed way too often and he thinks that one day I won't be like this. 

I have thoughts that I am too much and he thinks about leaving or that he should leave me because he would be so much happier with someone mentally stable. 

I've been this way for 12 years. Granted some periods were better than others but progress has been slow and there have been many backward steps. 

I also don't like how I feel in a relationship when I'm experiencing symptoms. I feel like a burden. That I'm too much and that the good times aren't nearly worth the hell I've put him through. 

I think maybe I should adopt a casual relationship lifestyle and never try to be in a long term monogamous committed relationship again. That this is unattainable for me with my condition. 

I have fears this will be lonely at times but it may be less harmful for myself and others. 

Should I set us both free?