I, as a borderline (or close to it), have been in a relationship with another borderline. We met in the psych hospital (ironic, isn't it) after a suicide attempt by him and chronic self-injury to myself. Anyway, this was a few years ago, and I have improved a great deal since then. Looking back, it was just a BAD idea to get in a relationship with him--even stupider knowing that we were both borderline heading into the situation.
We had personality roles: I was the narcissistic one, he was the self-deprecator. However, given our BPD tendencies--which included a penchant for rage and violence on both of our parts--as you can imagine, there were fireworks (and not the pretty kind with nice colors). We had frequent arguments, which would seemingly always be a precursor to all-out physical fights. No matter who threw the first punch, it was coming right back at them. We were abusive to each other and both of us were at fault.
Anyway, in the least--it was volatile, the most--completely self-destructive to both of our lives. However, even worse than the physical confrontations (and this was extremely stupid on my part) was the fact that I put myself on a property lease with him. (He had always been a deadbeat when it came to paying bills, etc.). As our relationship deteriorated after about a year (it was a pretty long time considering what we put ourselves through--we we're both scared of abandonment though) he refused to pay his share of the rent and began blackmailing me for it. Someone had to pay up, and it was always me. He just flat out refused to pay, although to be fair, his financial resources were much drier than mine. I had to hire an attorney and get my name removed from the lease--it was an expensive, lengthy process. My ex and I have not been in contact since then.
So, unless you want to put yourself through hell, under no circumstances do I recommend partnering with another borderline or Cluster B.
Does anyone share a similar experience?