I am not married yet but I can say that I may not marry the
person I love most. Love in marriage is optional to me. As long as
I think you are suitable for me, can live with me through thick and
think, you can be my wife.
Let me give real-life example:
X = A man
Y = A woman
X finds Y attractive and open-minded.
Y finds X charming and witty.
They started dating each other.
X and Y fall in love with each other, thus decided to get
married.
A few years after marriage, they start to find faults with each
other.
X accused Y of being unfaithful, flirt wife.
Y accused X of being irresponsible, gambler husband.
Thus, they filed for separation and then a divorce.
And that is the end of their relationship.
However, one important point to note is that X already knows Y is a
flirt and Y already knows X is a gambler BEFORE marriage. Both X
and Y did not change much, yet the same person that they once love,
they despite one another in the end. Somewhat ironic isn't
it.
Summary:
A decision to marry a person you love but cannot live with = Big
mistake (or more like a disaster)
A decision to marry a person you do not love but can live with =
Minor mistake
A decision to marry a person you both love and can live with =
Ideal case