I had told my husband about my history of self injury before we got married. When I first got diagnosed with bipolar disorder and started cutting again he didn't like it but he eventually grew to understand why I do it. We have an agreement that I don't have to tell him when I cut but if he notices my cuts and wants to check in with me about them I'll be honest about how I'm doing. It's such a shameful secret for so many of us and I think it's important to have at least one person you trust. I still feel uncomfortable talking to my therapist or pdoc about it but figure they can't help if I'm not honest.