Kristen Crockett said this quote

Whether our caretaker was our mom, dad, uncle, aunt, grandparent, foster parent, or sibling, our blueprint of what a relationship is supposed to look like is drafted by what we observed from our caretaker’s relationship. If our caretaker took their significant other back multiple times, made excuses for their actions, helped them battle demons, turned a blind eye to their infidelity, or moved from one relationship to the next, that is what we know. Their behavior becomes our very own model of what a relationship is supposed to look like and determines what we will expect from our own partners.