So, for an introduction and context, I do not have BPD. Last year however, I met and fell in love with a beautiful girl who does have BPD (Untreated :/ if that helps). To be completely honest I didn't know anything about the disorder before I met her, but I dedicated time to learning about it for the sake of understanding her better. I by no means claim any sort of expertise or even knowledge beyond the surface level about BPD, that's why I'm here lol. To make things short we broke up on Sunday, and I need some insight from people who know better

Our relationship was absolutely wonderful, we barely even ever had disagreements, as far as I knew, everything was perfectly fine right up until the day it ended. There was no manipulation, no toxicity (Though she believes she was toxic to me, no matter how hard I try to convince her otherwise), nothing like that. I don't want to copy/paste every single detail of our breakup here, if you really want to know feel free to look at my profile. It's the only other post I have

Our relationship was too difficult for her to handle, she decided to break things off romantically, however we have remained friends, and we've been talking exactly as often as we did while we were still dating. I care about her so much so I'm very glad about this, i don't want her to be alone especially when her mental health hasn't been the best recently 

What's got me confused is like, we still talk just as often. There is absolutely zero hard feelings, she told me she didn't want to lose the pet names like "Sweetheart" and "Darling", we even still say "Love you" before bedtime. Is this common behaviour for someone with BPD? Or is this just her unique response to everything? It sounds like a fear of commitment to me but honestly I am just confused. Any assistance would be greatly appreciated, thank you in advance!