(To Jellies who consider themselves "bi-polar") Is it difficult for you to stay in a serious relationship?

I have never been medically diagnosed as Bi-polar, but I think this is only because I have never been medically examined (because of the religion I grew up in). My close friends and a lot of my family have all wondered if I might be bi-polar because of multiple reasons, but the thing I’m most concerned about is my difficulty to have a strong, serious relationship with someone.

It might just be that I’m dating the wrong men (and sometimes women), but none of them have horrible qualities. They all have good values, and I am always attractive emotionally and physically to them, but it’s me who feels unbalanced at times. The highs and lows eventually tire my s/o, and even though they don’t break our relationship off, I feel so stressed from the back and forth of my own mental state that I end the relationship in hopes that I can try to be more balanced.

Right now it seems to me that being alone is easier to handle, mainly because life is more simple, but I’m worried that I’ll never be able to have a serious relationship lasting more than a year, let alone be married unless I take drugs to keep me happy/balanced.

So I guess my questions to you are, do you, or have you had similar issues? Should I treat dating differently because of this problem, or should I not date for a while, or not at all? Is being medicated really that helpful?