That's what I was worried about, my husband believing I'm a terrible person and leaving me. He knows me though and your boyfriend knows you. Maybe speak to him about your concerns.
I worry a lot about the stigma though. I have only told my husband and dad about the diagnosis. I think that you get abusive people in all walks of life whether or not they have a mental health problem. Its about the individual and not the label, just wish more people thought that way.