How do you handle people blaming your bpd?

I have someone (my fp) who doesn't ever take my feelings seriously because he seems to think everything is just caused by my bpd, and not that his actions are genuinely hurtful. He won't take any accountability and makes me feel like it's my own fault for feeling hurt and being sensitive. How can I get him to understand that my feelings are real and valid, and that he can't keep pinning everything on my bpd and acting like I'm the problem??