Dealing with a Partner Who Doesn't Understand BPD

boyfriend "dont worry I know how to handle someone with bpd youre not too much." also boyfriend, in response to a video snap: "i dont usually watch videos" *watches youtube* also: "you talk a lot" *listens to podcasts* also: *hangs up on me without saying anything bc i didnt talk for a little bit* *hangs up on me again when i called him back bc it took me three minutes to say smthn* also: *ignores me while i cry in bed next to him* *doesnt talk to me for days* *one word responses* *wont let me know wtf is going on inside his head thats making him so distant* ???? like what??? like i know my emotions are my own to deal with but how can you know i have borderline and know my rejection sensitivity and just??? act like that without saying anything??