No worries:)
Thanks for this.
Question i think i'm normal guy and normal guy do mistake. Also the admit it and say sorry and regret it.
Sure. This may be what you think, but not what she thinks. She's not you. It helps to respect that she's got different opinions to you on this. Also, if she's a pwBPD, if you choose to delve too far into her thinking, you have to take up the risk of being increasingly uncertain. There's no direct way for you to verify or validate your thoughts on their thoughts. That's also a form of unproductive rumination--which might signal something to you.
She on the other half did for example start to mingle with other guys before she break up with me and told me to go to hell. She will never feel that she is wrong? Or say sorry for that?
Some people are like that--they either respond like that, or think that's okay, or both. We can't really know. This behaviour goes for both men and women. I'm sure you know a man that has an excessively easygoing attitude to his relationships. I would then ask you if you want to associate with someone who doesn't see wrong the same way you do--or apologise for something where you think it's suitable to apologise. Would you?
Also i read somewere that it sometimes looks like they are waiting after we do mistake so they have a resone to break the realationship is that maybe possible and she got a reson to paint me very black for what i did
Yes, I believe they do this in various ways. One way to look at this compassionately, is that we explore different ways to satisfy ourselves. When I am in emotional pain, I will run, it can be both good (distraction) and bad (I have a sports injury). Respectfully, you did what you responsibly called a "mistake" by creating an account to satisfy your sense of curiosity, dissatisfaction, and closure. For a pwBPD, he or she will sometimes choose to do something because it's one of the small handful of choices they know how to make. Sometimes, they could be trying to get closure like what Raspberry mentioned to you.