On my mind again

I'll never get used to this.
She's on the move again. The fiance didn't work out.
What's marked in bold is what gets to me!

"Borderline personality disorder affects how people feel about themselves, how they relate to others and how they behave.
People with BPD often have an unstable sense of who they are. That is, their self-image or sense of self often rapidly changes. They typically view themselves as evil or bad, and sometimes they may feel as if they don't exist at all. This unstable self-image can lead to frequent changes in jobs, friendships, goals, values and gender identity.
Relationships are usually in turmoil. People with BPD often experience a love-hate relationship with others. They may idealize someone one moment and then abruptly and dramatically shift to fury and hate over perceived slights or even misunderstandings. This is because people with the disorder have difficulty accepting gray areas — things are either black or white. For instance, in the eyes of a person with BPD, someone is either good or evil. And that same person may be good one day and evil the next.
In addition, people with BPD often engage in impulsive and risky behavior. This behavior often winds up hurting them, whether emotionally, financially or physically. For instance, they may drive recklessly, engage in unsafe sex, take illicit drugs or go on spending or gambling sprees. People with BPD also often engage in suicidal behavior or deliberately injure themselves for emotional relief.
Other signs and symptoms of borderline personality disorder may include:
Strong emotions that wax and wane frequently
Intense but short episodes of anxiety or depression
Inappropriate anger, sometimes escalating into physical confrontations
Difficulty controlling emotions or impulses
Fear of being alone"
(Mayoclinic.com)