I've always been upfront in my relationships. Once they've gotten to know me and I thought there could be something then I'd tell them. Usually I'd just slip it into the conversation and if they seemed taken aback then I'd say you know me and this is just a part of me. If you have any questions or concerns please feel free to ask.

You'd be surprised how many people know someone that suffers from MI or suffer themselves. One guy gave me a hug and said I'm bipolar too but i was scared to tell you because I thought you'd run. You never know if you don't take the chance. But I guess you could feel him out tell him you've been helping a friend with depression or something like that and see how he reacts. Best wishes to you.