I just started dating someone as well! It's my first relationship since I've been diagnosed and treated for bipolar. I told the guy right up front, I have come to the realization that bipolar doesn't make me who I am, its just a part of me. But it is a part that needs to be attended to every once in a while. Its not a fault to have bipolar, because its not under our control. All we have control over is seeking help and taking our medications and learning more about our problem (which you are obviously doing if you're on this website). I'd rather tell someone I could potentially get close to about it now, then have him see me on one of my manic states and try to explain it to him then. If he flees after you explain everything to him, then he wasn't worth your time anyway. Good Luck! I love talking about relationships, so if you ever want to chat or anything just let me know!