It does come as a huge relief when we finally realise that our partner acted the same way with everyone as they did with us. It's quite scary how we know deep inside that we're decent people who have been loving and caring, but we've been made to feel we're somehow the bad guys.
Funny story- I had completely forgotten about this until I saw your comment.
I was dating a girl in college; beautiful, full of life, everything was great. Then she broke up with me almost out of nowhere. Looking back, she was almost surely in the BPD spectrum. And like so many others here, she had told me countless horror stories about ex's abusing her.
I knew the guy she left me for. Skinny kid, long hair like a stakeboarder or surfer. I hated him on principle alone because she was with him. But then she dumped that guy too, and told me it's because he almost broke her leg on a trampoline. Then another guy, completely different. Grunge look, full of tatoos. And she dumped that guy for someone else completely different.
I kept track for a few years but it eventually faded from my mind. It was very hard getting over her for some reason (now I understand why because we see all the patterns).
Anyway, a few year later I walk into a gas station, and the attendent is the guy she left me for. Instantly I want to punch him, LOL, but I keep quiet and hope he doesn't recognize me. I get to the counter and he says, "Hey, didn't you used to date <girl's name>." I said yes, anticipating a confrontation.
But then the guy says, "Hey, you should join our Facebook group!" I was lost- what Facebook group?
He then proceeds to tell me that there were over 30 people in a Facebook group called "girl's name + ex's". She lied to all of us about herself and everyone else, and when a few of them finally met and started putting together the facts, they actually made the group. I didn't even know what to think about that so I never joined, but OMG...you talk about validation! There were over 30 of us and she would have been like 24 years old at this time.