Given your answers, I wouldn't suspect BP necessarily. I do recognise some of what you're saying (I don't experience it myself but I know of people that have such interpersonal difficulties, possibly similar to what you experience).

It might be depression caused by interpersonal problems which have to do with very high standards for yourself and others.

A therapist might help you to be more tolerant of behaviour that causes you to have such thoughts (and I expect, anxiety).

There's not really a diagnosis (arguably; there might be one) for such problems, but that wouldn't really matter.

Do you have family or relatives with BP or some other mental disorder or something that you expect may be like it? If it's like what I expect, that might contribute to the problems.

I think what you describe might be one of the few problems where antidepressants could really help you—together with psychotherapy to change your (maybe more hidden) attitudes.

It does sound like something that can be overcome. Maybe not easily, but recognising there might be a problem is a good first step.

One more question, maybe for now: do you consider yourself to be a perfectionist?

IfAs you are an adolescent it might indeed just be something completely normal, something many people go through at that age. But there's no shame in making sure by talking to your GP.