Yeah. I suspect I have Borderline Personality Disorder. I self-diagnosed because I do not know how my Life would be once it's official. For more information, you could read the wiki article, Psychcentral, WebMd, among others. I read from them and summarised an understanding. To point out a few points, we, BPD, are sensitive to emotions. We can't regulate them like "normal" people. We can be egoistic or selfless, life of the party or dead weight.
We can both provide and demand support.