My BPD ex left me unexpectedly a week ago for someone else. I have been struggling with life as it happened absolutely out of nowhere, and that same morning she made me promise that I will marry her. The breakup was a total mess, as she was insulting me for a week now, but last night, she wanted to call and set things right and say a proper goodbye. During that call she was very visibly splitting, as she was saying how much she misses me, and still loves me. She said that none of the insults she said mattered, as she didn't mean any of them and she also said that she still wants to be together. Before, she claimed that she had the best week ever since she left me, and did nothing but have fun and kept laughing the whole time. On that call however, she mentioned that she suffered this whole time, barely ate any food, and didn't do almost anything at all. She also mentioned that she never felt this suicidal and she keeps thinking about self harm. Then she told me that she doesn't even want him, and she just wants to be with me but we can't be together because her family would "massacre her" and she feels like we would go through hell because of her splits. Her family is insanely manipulative and wants her to do everything they basically tell her to, and pretty much hates me. But if she was with him? She would get permanently fixed forever? That doesn't make sense to me, claiming that she can't be with me because of her splits but she can be with him?  
During the call she also mentioned that she doesn't want to be with him, and then that she does, and then she doesn't again...completely kept changing the answers a lot.  
She also said that she still loves me and wants to be together, but then she also said that we can't...this changed so many times...  
In the end, she mentioned how she wants me to block her everywhere so she can't text me.  
But then, she said that I shouldn't block her, but just in case she texts me, I shouldn't reply to her insults.  
Today I was checking up on her if shes doing better and eating well, but she just told me to never talk to her again.  
I'm lost and still extremely heartbroken, as we still planned to marry just two hours before she got herself someone else...  
There's more to the story on my profile and any reply and help would be much appreciated.