Do you have a strong sense of identity; do you (generally) know why you do the things you do?

If it helps to explain some aspects of your behaviour, being diagnosed with BPD could be desirable. I don't see a problem with that, necessarily. What strikes me as odd is that you want to be seen as manipulative.

Do you like to pretend? Do you ever feel like an impostor?

Do you ever feel shame? Do you ever do things out of desperation?

Please don't just say "yes" or "no" to any of these questions, but try to give examples.