I have bpd and this new job offer for my so came up suddenly and he's moving. My bpd is telling me - "he's leaving me, he's abandoning me, this will never work."

Can LDR work if I have bpd? I'm afraid I'll get jealous, feel abandoned, that all my bpd symptoms will flare up and get worse. I am so scared. Is he actually that serious about me? Will he really be committed to me? How could this work if he isn't here to support me in person as often? 

I don't know what kind of advice I'm looking to hear but would love any thoughts. Perhaps reassurance or maybe this IS a bad idea?