The student asks a teacher: What is love?
The teacher said: in order to answer your question, go to the paddy field and choose the biggest paddy and come back. But the rule is: you can go through them only once and cannot turn back to pick.
The student went to the field, go thru first row, he saw one big paddy, but he wonders....may be there is a bigger one later. Then he saw another bigger one... but may be there is an even bigger one waiting for him. Later, when he finished more than half of the paddy field, he start to realize that the paddy is not as big as the previous one he saw, he know he has missed the biggest one, and he regretted. So, he ended up went back to the teacher with empty hand.

The teacher told him, this is love... you keep looking for a better one, but when later you realize, you have already miss the person.

The student asked: What is marriage then? The teacher said: In order to answer your question, go to the corn field and choose the biggest corn and come back. But the rule is: you can go through them only once and cannot turn back to pick. The student went to the corn field, this time he is careful not to repeat the previous mistake, when he reach the middle of the field, he has picked one medium corn that he feel satisfied, and came back to the teacher.

The teacher told him, this time you bring back a corn.... you look for one that is just nice, and you have faith and believe this is the best one you get .... this is marriage.