someone here might get it all right. We all feel cornered, lost and anxious a lot of times. I don't know what you mean by "from both points of view". Here I've learned about people who are with someone with BPD, but also from what the people with BPD have said about insights of their own experience.
Tell us your story, what worries you, or whatever you need to let out of your chest. There is always someone that has gone through something similar and just being heard helps; but they'll also offer some ideas that open new paths.
good luck!