My Bf Is Suffering From Bipolar Do

My bf is suffering from bipolar disorder, I really dont know what to do if I can still handle him. Before we started the relationship I know that hes already diagnosed to have a bipolar do. I didnt know thats it is something serious, my sister already warned me about this that I dont know what im getting into but I didnt believed what shes saying. As I can see he's doing ok and hes nice to me. Until we finally went out, I did research a lot of things about he's illness because I wanted to know more about his condition and I told him I wanna take care of him.. We encounter a lot of arguments and fights we've been together for 3 mons now, sometimes I feel like giving up and I dont know if I can handle him and we can make dis relationship work. He's a nice guy and I can feel he love me but then whenever I his anger comes out we dont get to understand each other. The way he reason out things on me, shows me he doesnt care at times but after a day he'll be ok makes me think of giving up on him. He's hoping that someday we would get married and have a family on our own. I was also hoping someday but I dont know if I can handle it when at the back of my mind I have doubts of getting married to a guy who suffers from a mental illness. He's on medications and having a treatment from his doctor. He's doctor told me that hes ok now after being locked on a mental ward last year for having acute manic episode. I know my bf doesnt want himself to be on a mental ward again so he's doing everything to be ok. Please help me and give me advice.. Should I lose hope for still be there for him coz I know he needs me. Please help me thanks