Hi Windy. I wish I could assure you that it is curable. I wish I could tell you that it was just my opinion. But if you read the literature from psychologists, you will know that it isn’t. If the person is willing — and that’s a big if — therapy can help them cope with the world. But it won’t cure them. I have also been in relationship with people like this. I was also raised by people like this. Everyone is different, but in my case, I had to cut off my family to save my own. I also had to realize that “my love won’t save them.” It won’t. Don’t take my word for it, though. Go out and read books by psychologists on the subject. For borderline, the classic is “I Hate You, Don’t Leave Me.” There are numerous books about narcissists as well, which will describe your life to a T. They are nothing if not consistent in their toxicity.