Yes, stay away from BPD diagnosed women and relationships. It is too unpredictable. Resort to rational prejudice.
In my experience, BPD is 'overdiagnosed' nowadays. I have met many people who don't really qualify for the diagnosis and wouldn't have been diagnosed 10-20 years back for that reason. Diagnosing has gotten to a whole new level. One person here was diagnosed with tobacco addiction and atypical anorexia recently, for having lost a bit of weight fast and being a smoker .. Not to mention that person is a very moderate smoker with ideal BMI.
So probably the majority of people with the diagnosis are not actually the embodiment of evil. If the women appear unusually (sexually) attractive for reasons not entirely apparent, I suggest that is the biggest warning sign and one of the most noticeable warning signs that any woman has the evil kind of BPD, if you have ever experienced it and know what I mean exactly.
There are enough masochists and other BPD people in the world they can have relationships with. Also studies show: BPD people do way better in relationships with their own kind.