Thanks for all the incite. Here are a few answers to some of the thoughts/questions from posters;
He admits he has a drinking problem. I have suggested AA before and he said that AA is for quitters and he is not a quitter.

He doesn't admit to being diagnosed with BP, he only admits to being in an institution at age 12 for bad behavior. He says his bad behavior was drinking, smoking, having sex, vandalizing, fighting, and skipping school.

He loves woman but admits having sex with guys about 10 times starting with a school mate at about age 12 to orgy situations to a professor at college.
He thinks he is the reincarnation of the philosopher Nietzsche.

His uncles both were bipolar and both committed suicide before he was born. He is a fraternal twin and also questions if he and his brother are the uncles.

He is a Anthropologist and is one of the smartest persons I have ever met. (and I have met some very bright people)

I could walk away and move on with my life but I am somehow connected. It appears that his pattern is to end all friendships with a "fight" and that justifies his hermit like life.

I have seen his flip out a number of times and I always tell him that I forgive him as it was the liquor talking, not him. He is always surprised that I still want to be his friend.

It is now 6 days later. I sent him a link that was humorous regarding maps, (one of his passions), and his reply was, "You've been mislead, I haven't. Most people don't care or pay attention to such details, you're obviously included." He didn't get the humor, I guess.

I just want to help him, support him, be there for him. I see the internal pain he is in and how he hides it and masks it. I know how much he appreciates me and the friend that I am. This is a new level of flipping out and I do believe he is embarrassed but trying to act very Stoic. I feel like his therapist, (as he has also said I am to him), but I don't know what is the next move, since I am not a therapist!