How do you get through to someone you believe is bipolar and refuses to talk about or even ackowledged that it could be the problem with your marriage? What has worked for people? Time spent away? Divorce? Am I beating a dead horse?

I am so frustrated and dont know what else to do....I am separated from my H, but I am still trying to reach out as much as I can w/out it really affecting me. I know I am not responsible for this disease but I want him to know that I care and that I dont want to be out of his life b/c of this but I dont think I have a choice. Ahhhhhh....I wonder deep down if he knows how much this is hurting b/c he certainly isnt acting like it is affecting him in anyway except the fact that he seems like the everything is so negative. He denies saying things to me, denies that they ever came out of his mouth. And that hurts, he blames me for all of this. That I need to get over this and take responsibility, I only take responsibility for not getting to information sooner b/c maybe things would have been different. But they arent and this is life....sorry....just venting......