What is love....????

A student asks a teacher, "What is love?" 

The teacher said, "In order to answer your question, go to 
the wheat field and choose the biggest wheat 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 through first row, he saw 
one big wheat, 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 wheat field, he 
starts to realize that the wheat is not as big as the 
previous one he saw, he knew 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 
better ones, but when later you realize, 
you have already missed the person...!!