Borderline Personality Disorder is the most widely recognised mental disorder in the West. However, this should not make you underestimate it. Severe Borderline is excruciating for the sufferers. More than that, it heavily affects the people around them. This is because it is characterised by rage attacks, violent mood swings, irrational and dangerous behaviours, deliberate threatened or actual harm to both self and others and destructiveness.
If you are a man dating, looking for a partner, then you might encounter someone who displays the symptoms of Borderline. While we make our own decisions in life and are responsible for them, I would advise you to read this and watch the associated video. I have also added links to other sites with more information. I think you should inform yourself about this condition before you make a decision as to whether or not this person really is somebody you could make a life with.