Persisting with unfulfilling relationship
It is quite common that despite relationship going sour and feeling it futile & foolish to stay in an unhappy relationship, one does not easily calls it quits. Why ???
One school of thought is that one persists with the unfulfilling partnership because of self interest like the biological need and wanting not to be left alone.
Another school of thought is that person continues with sour relationship as he/she believes that the partner is dependent and stays for the sake of his/her partner’s needs rather than their own.