Ohkay so my boyfriend gets mad at me all the time for everything but it seems like when I get mad and tell the truth it's wrong for me to do and plus he's really suicidal and I think that's why he gets so mad easily and he has bi-polar and he gets mad at me for everything I say. Like I said to him that I was scared for him and I wanted him to get help so he flipped out on me and started crying and asked why I would say that to him and that is was a horrible thing for me to say to him. He's getting me so stressed out and depressed. And I can't leave him because if I do he will kill himself. He had tried to kill himself in front of me a few times. What should I do?

Clearly your boyfriend does not have his bipolar disorder under control.
If he is not on meds he should be and if his meds are not working as evidenced by his behavior he should be reevaluated and put on something else.Some anti psychotic meds can actually make the patient worse.
I would encourage him to seek further help while at the same time insuring your own safety.
If he ever attempts suicide again call 911 and know that you are doing the right thing.
If you have friends and family you should let them know of the situation and his parents as well .
Protect yourself as well.Sometimes the best thing you can do for someone is to give them tough love and by that I mean forcing him to seek professional help.
Good luck... be safe.

You should disappear from his life, and leave him alone.