For almost a decade, the OP believed her best friend was simply unlucky with people. “Brittney” always seemed to have a story about someone who had betrayed her, disrespected her, or treated her terribly. Friends disappeared. Jobs ended badly. Relationships exploded. And for years, OP defended her because that was what best friends did.
Then OP moved three hours away and introduced Brittney to her boyfriend’s newly single friend. The two hit it off immediately, perhaps a little too well. Within five months, Brittney had left a good-paying job and moved in with him.
That was when OP began seeing things she could no longer explain away.
The more she learned, the harder it became to ignore the possibility that Brittney was not simply surrounded by terrible people. Here’s how a ten-year friendship finally reached its breaking point.




































The Side of the Story OP Had Never Heard
At first, Brittney’s relationship looked like another case of two people fighting because of distance. But after OP lived closer, she witnessed the chaos firsthand.
Brittney went through five jobs in two years, usually after conflicts or feeling disrespected. She also left two college programs. Her relationship became increasingly volatile, with huge arguments going both ways.
Then OP started hearing the boyfriend’s side through her own boyfriend.
There were stories about previous relationships, police investigations, alleged stalking, and accusations that OP says had been falsified. When confronted, Brittney admitted she had lied about some things in the past.
That admission changed the way OP viewed everything.
Because OP works in mental health, she tried to approach the situation with compassion rather than judgment. She encouraged Brittney to seek professional help. Eventually, Brittney was diagnosed with borderline personality disorder and bipolar II disorder.
But diagnosis did not magically solve the problems.
Brittney refused individual therapy, saying it was too expensive and claiming therapists would convince her that she had experienced childhood sexual abuse. She also reportedly treated medication as something to take only on “bad days,” despite OP trying to explain why psychiatric medication generally needs to be managed with a healthcare professional.
The relationship eventually reached a crisis point.
About ten months before the Reddit post, Brittney’s boyfriend called OP crying and asked her to come get Brittney out of the house. OP told him to contact the police.
Later, Brittney called OP claiming her boyfriend had gotten physical with her. OP took the accusation seriously and told her own boyfriend, who happened to be with him.
The story turned out to be more complicated. According to OP, the boyfriend had been trying to leave during an argument while Brittney blocked the doorway. When he opened the door, her hand became caught and he was pushed into the wall.
Brittney admitted that was what happened, but became furious that OP had told her boyfriend.
Then came the sentence that finally broke something inside OP.
While the two women were trying to repair their friendship after two weeks of silence, Brittney told OP that if she and her boyfriend had not fixed their relationship, she would not have remained friends with OP either.
After ten years, OP suddenly realized she did not want to keep fighting this hard for the friendship.
Understanding the Difference Between Compassion and Responsibility
The important part of this story is that Brittney’s diagnoses do not make her a bad person, and they do not automatically explain every harmful thing she has done. Mental illness can affect emotions, impulses, relationships, and behavior, but it does not mean everyone around the person has to accept mistreatment.
The National Institute of Mental Health explains that borderline personality disorder can involve intense emotions, impulsivity, and unstable relationships, but it also emphasizes that effective treatments exist. Psychotherapy, including dialectical behavior therapy, can help people develop skills for managing intense emotions and improving relationships.
That distinction matters here.
OP spent years trying to be understanding. She defended Brittney, encouraged treatment, responded during crises, and even became involved when she believed someone might be in danger. But supporting someone is different from becoming responsible for keeping their life together.
The same principle applies to bipolar disorder. NIMH recommends following an individualized treatment plan and taking prescribed medication as directed, rather than changing medication use independently.
OP cannot make those choices for Brittney.
And perhaps that is the hardest lesson of all. Sometimes loving someone means admitting that you are no longer capable of being close to them without losing your own sense of peace.

Several commenters living with bipolar disorder or who had experience with BPD stressed that mental illness should not be used as a blanket excuse for repeatedly hurting other people.




















Others focused on the pattern OP had finally recognized. Friends had left. Jobs had ended. Relationships had collapsed.


























Walking away does not mean OP hates Brittney. It does not mean she thinks Brittney is beyond help. It simply means ten years of friendship no longer outweigh the emotional cost of staying.
The bigger irony is that OP spent years wondering why everyone eventually left Brittney. Now she understands that she does not have to become the exception.
She can care about Brittney from a distance, protect her own privacy, remove her location access, and let the adults around Brittney make their own choices.
Sometimes protecting your peace is not betrayal. It is finally accepting that friendship cannot survive on one person’s patience alone.
Was OP finally setting a healthy boundary, or should ten years of friendship have earned Brittney one more chance?

















