Me and my ex have had the same problems. I knew she was a BPD, and I had a lot of moodswings and stress caused by my job. We never had a stable relationship, we had a fight almost every two weeks.
She wasn't easy and I'm stubborn as a mule. Thats a bad combination. Once we broke up for almost one month she was the one who ended it. Later we got back together, when I asked her why she wanted me back she said that she isn't upset anymore. We never had a stable relationship.
Now we have broke up again (2 weeks ago), I know this relationship doesn't work she knows it too. So I gave up and hopefully my next girlfriend wont be a BPD'er.
She always neglected me and gave me attention only when she wanted. That only made me stronger and started to care less about her. If I would spend too much time thinking about this I really would hate her.
I texted her a couple times and she never replied so
#&# her. This is probably how all of her future relationships will look like. She's the one who made a major loss not me.
A guy I work for told me to forget about her and enjoy my life. It's not worth it. He's right and I'm following his advice, I don't even think about her anymore.
I need to take care of my self. I really gave up on her. We had like 14 fights within a couple months.
Soon or late you or he is going to end the relationship forever. I always believed in her but thrust me you're going to get hurt if you stay with him.