I used to have kinda-normal relationships. Except the last one. It was a rollercoaster. She bashed me about my mistakes, I bashed her about hers. I went to second base with other girl during one of our breakups and she bashed me pretty hard about that. Weeks later she slept with another guy even though we were fixing things up. I called her a wh0r3, she called me an a55h0le. Etc. 

I loved her like crazy (literally), and even though she had slept with someone else already... I kept calling her like all the time many times a day, invented stories in my head, showed up without notice. Crazy ex/bf stuff. Funny thing is that she was still answering my calls, receiving me, insulting me, having sex with me, having lunch and dinners together. The relationship was pretty much dead, but co-dependency and my insistence kept us "together". It was pretty sick.   

Till it was finally over for good when she moved out after receiving a job offer in another school. She changed her phone number too and is impossible to contact her anymore. Such a big relief.

I believe this went too far due to the fact that there were no boundaries of respect between us, co-dependency and guilt on both sides, and manipulation on mine. At the end she had not respect for me, and obviously neither did I. 

I believe this was very unlikely to go as far as it did if she had been a "sane" person (just like the others), or ugly LOL. (or me being sane, of course)

Note:    
I had bpd mistakes in previous relationships before, but nothing like this, just some simple out-of-my-heart sms or emails when feeling that the relationship was going south, the typical abandonment reactions. Things like that. But I never felt as crazy and surprised of how far and intense it went, before, during and after the relationship, as it went in the last one.

I would not like to put anyone in this position again, or put myself into this again. 
I believe this is a precedent that I can't deal with bpd's and it should be a red-flag/deal-breaker in the future.

So my question is:     
Can a bpd parter trigger and exalt your own bpd behaviors?   
Based on my experience I would say "yes".   
But I would like to know your point of view.    
Articles or experiences are appreciated.