so, i was going through materials off the web and doing my readings to pass the time when i stumbled upon this.
Borderline Personality Disorder is a disorder of the emotions. Imagine a person who is extremely sensitive to rejection (fearful of even perceived or anticipated rejection) and has a limited ability to modulate their emotional impulses (love, fear, anger, grief, etc.). To protect themselves from their own feelings, they are prone to adopt a multitude of dysfunctional rationalizations and cover-ups.
For example, a person suffering from BPD may so fear rejection in a new relationship that they recreate themselves in the image of a person they believe would be lovable. When the negative emotions for making such a sacrifice surface - and not having the ability to modulate them, they lash out at the target of their affections for "making them do it" - rather than face their own feelings of inadequacy / fear of rejection, ultimately damaging the relationship they so fear losing, and reinforcing their feelings of inadequacy / fear of rejection.
(source : http://www.bpdfamily.com/bpdresources/nk_a102.htm)
and i will stop at that, while i continue with my readings.