"Borderline Brach Herz" is aimed at partners of individuals with borderline personality disorder who wish to end their relationship or have already separated and are suffering from the pain of the breakup. The book aims to facilitate the processing of the separation. Compared to the issues that come with a "normal" breakup, saying goodbye to a borderline relationship is significantly more challenging, as those affected often leave the relationship traumatized. This guide is designed to help process the past relationship with a borderline partner more easily and provides a general overview of the personality disorder, comfort, and useful tips. Particularly helpful are several case studies from the perspective of those affected, which share many interesting similarities.