The famous British author Wills Wilde once said: "To love oneself is the beginning of lifelong romance." What a significant thesis it is, by which we can drill down deeply to ourselves to see our real natures.
Then, what belongs to oneself when one is in love? The woman/man whom one is loving? No. I don't think so. I believe it is only the feelings, passion and enjoyment of that one during one's loving course.
To go ahead along this thinking, we can understand why one would leave that woman/man he/she loved best before? Why one could betray his/her oath made in hotness? Because the feelings was changed, the passion was gone and the enjoyment was replaced by that with other person.
I am not to say whether this kind of phenomenon is good or bad. I feel quite confused with it. On one hand, I hope all the couples can keep their love and marriage long to the end. On the other hand, I think people have the rights to update their feelings and passions, so that human being will keep their libido, vitality and creativity.
Alas, then there might unavoidably come the victim of former love.......