I thought I could see what her issues were and accommodate that and it would improve. Then I became aware there wasn't any self-growth. There weren't any excuses. Because we were fairly young. I was a bit older and more experienced.
I too saw clearly who he was and he didn't hide it, I just fell for him hard. I had not realised back then you can't be with someone for their potential. I thought I could help. But you can't force growth on someone unfortunately... Hard enough to grow yourself haha. Hope you're doing better.
I realized to what extent my own traits contributed not only to the end of the relationship, but (more significantly) to my subsequent unhealthy attachment to my ex with BPD. Like you said, there needs to be hard work put in to find balance within ourselves.
From this realization comes a whole new, deeper level of growth
for sure, the break up and what followed was so hard for us as neither of us wanted to let go. It forced me to look at my own behaviour. I wish it hadn't had to go that far for me to see how I was acting... And I'm still processing to an extent, but it's not agony anymore. And I have learn a great deal. Good luck to you.