I agree with Bella. What you are going through can't be easy. What he is going through isn't easy either. Personally I always felt like my mind was betraying me and often had to consult with my husband to see if what I was feeling was way off base. From what you are describing it also seems like he is a little paranoid which is also a symptom of the disorder. If you decide to give him the ultimatum to get help or you leave remember you will need to ride out the tough times as he tries to find the right meds. Even then it may not be smooth sailing all the time, but love isn't easy right?

I would also suggest, even if you do leave him completely, that you learn as much as you can about bipolar. You said you have 2 little girls with him. Bipolar is hereditary. That isn't saying this will affect them, but they could be affected and you should know what to look for and how to proceed if you do see any warning signs