A 26 year old lady wants to talk about problems she has had in her personal life since she was young. She has recently broken up with her partner of 1 year and mentions that she has had multiple relationships since she was a teenager, none of them lasting longer than this. She has been in trouble with the police in the past for dangerous driving and fallen out with her mum over this. She feels everyone has abandoned her and is terrified of being alone.
What is the most likely diagnosis?