@DuplicateUserName - Actually, gender does matter here.
Borderline personality disorder is very much a “female” diagnosis. Have a look at statistics on male to female statistics if you are interested.
The majority of women with this diagnosis have survived childhood abuse, often sexual abuse.
It could be argued that a man presenting with the same behaviours is more likely to be diagnosed with PTSD/C-PTSD, whereas a woman is likely to be further abused by the mental health system by being given a diagnosis of a personality disorder which has a huge stigma attached to it and is associated with manipulation and dishonesty. It some cases, the very diagnosis amounts to a death warrant, or a licence for the woman to be further abused (as who is going to believe a BPD woman in court, after all?)
I think we will look back, in the not too distant future, and be appalled that women were treated in this way.
So, if the OP had experienced abuse and been diagnosed with PTSD, would you be insisting that she tell a new partner all about the abuse and the effects it’s had on her development and behaviours, as he has a “right” to know? I hope not.