At times you refuse to let go, break up, or move on no matter how long you've been hurting in the relationship;
all "for the sake of our old good moments"
But sometimes you keep doing that for so so long such that you end up in love with the memories more than the person himself.
Be careful. Single or in a relationship; just make sure your love is directed towards a person or a goal. Whether it is towards yourself, or towards someone.
Don't fall in love with the memories and mess up your present and future because of the past.