Me and my girlfriend have been together for 2 years and I don't know how or if I want to leave her. We just argue too much and I've become depressed and bipoler while I've been with her what should I do.

What do you argue about?
Have you actually sat down and talked about why you argue a lot and what is causing these arguments and how you can fix it?

Have you seen your doctor about your depression and asked for help to treat it?
And your bipolar?

If you don't know how or if you want to leave her is their somewhere you can stay for a few days to think about this before doing it,you need to think about this,you've been with her 2years that's along time don't chuck it away just because your feeling low

If you have been to your doctor about your depression and he/she gave you tablets for it maybe you should go back and ask to change your tablets,the 1s your on might not be the 1s for you

Oh n hun there is no single cause for bipolar,many factors combined together cause the illness.and bipolar runs in family's,its passed down generations not just caused by 1 single gene,your girlfriend probably added to the bipolar [which you already had] she did not cause you to get it,because its in your genes

And from what I have read about this depression comes with bipolar,the mood changes,the ups and downs the manic episodes,mania,mixed episodes,delusions,hallucinations

You should talk to your doctor about your meds if you think they are not helping you cope with your illness

Well we have sat down a couple times and talked about it but nothing seems to work for longer than a couple of days I'm into my rotc and she hates it that I'm doing something for my future I guess or may be she thinks I'm going somewere I don't know I just want it to stop. And I don't want to leave her partly because I don't think I can find anyone else like her. I don't know!

Your choices are,
Stay and be miserable,
Or, leave her and work on your future and be happy.

Hummm sounds pretty simple.

Many times a dating relationship runs out of steam. One person is looking for more out of it than the other. Maybe after two years she is wanting to get married and settle down? From your desctiption it is either dead or dying rather quickly. Your choice now.