I am not sure I'd call it a "personality disorder" as one that would be found in the DSM IV or a billable code on an insurance form.
But I have seen common threads in the many AA speaker meetings I've been to or listened to over the internet. Lack of self confidence, lack of knowledge on boundaries, compulsiveness, etc. I put it in the "emotional sobriety" category.
So then we get involved in the roller-coaster of a relationship and have a lot of similar "symptoms" as listed above. We just get caught up in the chaos of it all, and often we aren't even aware its happening until it's all-encompassing. That's why we need "recovery" too, in whatever form that may take. I do consider it finding my "emotional sobriety" again.