I think you’ve gotten a lot of good advice here, and that you are doing the right thing in getting therapy for yourself. Although, if all your therapist has to say is “ignore him,” then you may want a different therapist. Is the therapist helping you understand what you want? Are you getting clearer on what you can live with, and what your bottom line is, where you have to get out? Are you figuring out what you need in order to feel comfortable divorcing him? It’s better to be prepared than to have to think this stuff up at the last second. It doesn’t mean you want to leave him. In fact, it may even help him, if you leave for a while.
I was wondering if he exhibited any of the other symptoms of bipolar disorder. Does he get a million ideas, but never carry out any of them? Does he go on spending sprees and buy things you can’t afford? Does he get very social, on occasion, maybe going out to places where people gather? Is he faithful, or does he think about or ask/demand sex all the time? Is he really into drugs or alcohol? Any hallucinations or paranoia? Impulsiveness? Flying off the handle at the slightest thing, or even nothing? There are others I’m forgetting, but you could check those out by looking them up online.
I have been trying to help a couple of people, recently, who are closely related to folks with bipolar disorder, but who refuse to get treated. In one case, I suggested that they urge him to check himself into the hospital. I wasn’t really expecting it to work, but I guess they got real clear on it, and he did check himself in.
And out. It was maybe three days or a week later, and as soon as he got out, he went on another manic spree (drinking, socializing, and who knows about sex). Hospitalizations can give folks a time to give up responsibilities and try to work on themselves. Of course, they don’t always work.
I tell people to support their loved ones in doing what’s healthy. Like getting therapy, or staying on their meds, or hospitalizing themselves. I think that if he is bipolar, he needs love more than anything, and your support has to be built on love. If you leave him, or punish him, it will only confirm his feelings of worthlessness.
On the other hand, there is only so much you can take. I suggest you think about that, and figure out exactly how much you can take, and when you have to get away from it. You need to take care of yourself, first. Don’t subsume yourself to him.
If it’s Narcissistic Personality Disorder, I think that some of my advice about taking care of yourself is still good. I have no idea what you can do about him, though. Perhaps just keep on urging him to get diagnosed. Your concern may get through to him. I don’t know if you have children, but if you do, you can point out the impact his behavior is having on them. Otherwise, you can point out how he is affecting you and your friends or other family. Urge him to get treated so he can stop hurting people. It may take a while, and it may never work, and, like I say, take care of yourself.