I've debated whether or not to say this, but here goes:
IMO, I think that if we have gotten involved with Ns (spouses, significant others, friends), then, to me, that shows that we have a tolerance for the abusive ways Ns treat us.
So, if we have a tolerance for N abuse, then we must have been subjected to N(ish) abuse and most likely, we were subjected to N(ish) abuse when we were young children because that tolerance for abuse was imprinted upon us.
So, if tolerance for abuse was imprinted upon us when we were young children, it seems to me that the one who imprinted us was, most likely, a care taker such as a parent, relative or older sibling or someone similar.
Just my opinion.
ann