We had an argument last night but it was started by him being short with me and not being understanding towards why I was upset. He basically treated me in a cold manner and when I got upset, he didn't understand and we ended up arguing for two hours despite my best efforts to end the argument then told me I kept him up all night because I got upset over nothing and seemed highly frustrated with me. This hurt me even more but we ended the conversation on a low note. 

He had an important meeting for work and was supposed to prepare but this morning he told me he couldn't because of our argument and ended up not going. I felt horrible that he missed it as it may now cost him his job but at the same time, him blaming me didn't at all feel right and it hurt. 

Later our mutual friend contacted me and told me what he said about me and it was completely unlike him. He said I'm ruining his career and that he is going to break up with me in a few days when last time she told me only three days ago, that he still can't stop talking about me and was telling her how amazing I am. This is a huge change and it has me worried. He's only ever had positive things to say about me and now this.. 

He never once mentioned breaking up and would laugh at the idea of it then today acts like I'm at fault for ruining his career and is now planning on breaking up with me?

He has bpd but I'm not sure if this is that or what? Does it seem like it? I'd appreciate any input thanks so much