I wonder whether to be emotional or to be rational when you deal with the relationship with your lover.
If emotionally, you might quarrel with each other and then break apart, for you have all his faults in your mind at that moment, and are puzzled what you love her/him for. However, this should not happen usually when your love is true love.
If rationally, the quarrel could be avoided. But love may not be as sweet as it should be. On this condition, you consider about so many things that you feel no more passion in love, as it seems like something that imposed on you, such as… responsibility. You think you have to love her/ him; you think you have to make her/him happy, but not for that you are happy as long as she/he is happy.
Love is in the category of emotion. Love is something buds deep in your heart. When love becomes nothing but responsibility, it doesn’t make senses any more.